Used it on a Fendt. Those engine bays are a maze. Avic navigated it like it was designed for exactly this. Because it kind of was.
Zero swing arc at the bolt. 15.4" of reach. 1/4" ยท 3/8" ยท 1/2" adapters. Save your knuckles.
Why make it harder than it has to be?
Awkward angles?
No more twisting your wrist for a quarter turn. Spin the ratchet where there is room to swing.
Tight spots & hidden bolts?
The chain drive reaches fasteners tucked behind frames, brackets and hoses โ no teardown needed.
Short on time?
Get the job done faster and safer, with your hands kept clear of hot or sharp parts.
How It Works
Spin the open end
Run your ratchet or impact driver on the end that sits in the clear, where there is room to swing.
The chain carries the turn
A hardened roller chain relays the rotation around the obstruction without slipping.
The buried bolt turns
The fastener you could not reach breaks loose while your hands stay in the open.
Why the others fail
โ Flex-head ratchet
The head collapses sideways as soon as you put weight on it.
โ Swivel or U-joint
It bends at the joint and the socket walks off โ that is how bolts get rounded.
โ Stubby ratchet
A few degrees of swing at a time. Slow, and it still may not break loose.
โ Avichome Offset Extension
Nothing bends. The chain turns inside a rigid bar, so your force goes straight to the bolt.
Dominate Every Tight Corner
Rigid all-metal bar
Alloy steel body with a chrome-plated, anti-rust finish โ no flex, no plastic gears.
Zero swing arc
You need no room around the bolt โ all the turning happens at the other end.
Fits your sockets
1/4", 3/8" and 1/2" square-drive adapters plus a 1/4" socket in the box.
Turns both ways
Flip your ratchet to tighten or loosen โ the chain drives in either direction.
Where it earns its place
Engine bays
Alternator, starter, manifold and bracket bolts tucked behind hoses.
Suspension & exhaust
Hardware hidden behind frames and heat shields.
Boats & marine
Riser, starter and pump bolts down by the transom and flywheel.
Mowers & machinery
Small-engine and equipment bolts with no room to swing.
This tool solves reach, not rust. On seized or corroded bolts, use penetrating oil first.
Tech specs & what's in the box
Length
15.4" (39 cm)
Drive adapters
1/4", 3/8" and 1/2" square drive โ included
Socket
1/4" socket โ included
Material & finish
Alloy / chrome-vanadium steel, chrome-plated anti-rust coating
Mechanism
Sealed internal chain drive, turns both directions
Max torque
72 Nยทm (53 ftยทlb)
In the box
1 offset extension bar, 3 square-drive adapters, 1 socket
What Customers Say

Flat pack furniture assembly. The corner bracket bolts were impossible with a normal allen key at that angle. Avic made it easy.

Cam sensor bolt on my Mustang GT. Buried behind the intake. Every extension I tried just wobbled. Avic zero wobble, came straight out.

Garage door spring bracket bolts. Right against the wall. Avic got them without me having to move the whole assembly. Solid.

EGR valve bolts on my diesel pickup. Deep, awkward, behind the turbo. Got every one without taking anything apart. Saved me a full Saturday.

Used this on a classic Mini I'm restoring. Tight doesn't even cover it in those engine bays. Avic is now essential kit.

Bilge pump bolts. So deep in the bilge I could barely see them. Avic got them both. Brilliant tool for boat work.
Customer Reviews
Based on 66 reviews
havent used yet
Used this on a diesel inboard during a refit. Half the bolts in that engine are in stupid places. Avic got all of them. Worth every penny.
Finally got the starter out on my F150. Been putting that job off for two months because I knew it was going to be a nightmare. Avic had it done in 45 minutes. Genuinely stunned.
Very well made solid construction!!!
Quick ship and as advertised. Bought it for โwhenโ I need it. It appears it will do the job just fine. Great looking and very solid tool!
Flywheel bolts on my project car. Needed zero swing arc, had zero swing arc. Perfect tool for exactly this kind of job.
Alternator on a Honda CRV. Bolt hiding behind the AC compressor bracket. Normally would have removed the bracket entirely. Didn't have to. Job done.
Subaru boxer engine. I don't need to say more to anyone who knows. This tool reached places I've only read about in forum threads where people say 'just give up and take it to the dealer.' Didn't give up. Didn't go to the dealer.
Washing machine drum bolts during a repair. Tight space inside the machine. Avic got in where nothing else would. Saved me a new machine.
tool arrived as ordered and looks like it will function as designed.
I do my own maintenance on two trucks and a Jeep. This is going in every vehicle I own. The fact that it works with standard sockets and any ratchet makes it a no-brainer. Already used it four times in two weeks.
Used it on my kids' bunk bed. The bolts on the inside corner are basically unreachable normally. Avic sorted every one in about 10 minutes.
The chain drive is the thing. You can feel when you use it that it's not a gimmick. Torque transfers properly, no slop, no skip. Whoever engineered this clearly thought about what actually happens when you put load on it in a tight space.
RV full-timer here. Living in the vehicle means I fix everything myself because I can't exactly leave it at a garage for a week. Avic has been in my kit since January. It's already paid for itself three times over in bolts I would have had to farm out.
Nicely packaged, well made, clever tool.
Received item as described
Engine bay on my sailboat is basically a coffin. Avic is the only tool that's made sense in there. Use it every time I do any engine work.
Starter motor on a Toyota Hilux. Two bolts completely inaccessible with a normal ratchet. Avic sorted both in minutes. Worth every penny.
Had my BMW in bits trying to reach two E12 bolts on the transmission. Shop wanted $400 just for access. Avic reached them in 10 minutes. Easy math.
Used this on my bicycle - bottom bracket area, bolt deep in the frame recess. Avic got it clean. Versatile tool.
Works fine. Delivery took a little longer than expected but the tool itself does the job. Would buy again.
Bed frame assembly. Corner bolts totally inaccessible with the supplied allen key. Avic from above. Done in minutes. Should come in every flat pack box.
100 day money back guarantee made me pull the trigger. Didn't need it. This tool earned its spot in my toolbox on the first job. The torque transfer is real โ no flex no wobble just clean rotation where nothing else fits.
BMW E46. If you own one you know. The bolt behind the intake manifold that everyone talks about on the forums. Two hours of YouTube prep and I still wasn't sure I could do it. Avic got to it first attempt. Whoever designed this thing has clearly been under a car before.
Had a slow drip under the kitchen sink for 3 months because I couldn't reach the fitting. Fixed it in 10 minutes with this. Wish I'd bought it sooner.
Timing chain cover bolts on a Ford EcoBoost. Engineering department clearly hated mechanics. Avic evened the score.
The torque hold surprised me most. I expected it to flex or strip at some point because it's not a standard shape. Put real force on it, no movement, no slippage. 72Nm is not a lie on this thing. I've snapped cheaper extension tools doing the same job.
Sprayer pump bolts on my 6000 series John Deere. Surrounded by hoses and brackets. Avic slid through all the gaps. Bought a second one.
Used this on my baler last harvest season. Kept it in the toolbox all summer. Used it on nearly every job. Not going back to stacking extensions.
Seems to be of good quality, havenโt had the chance to use it. Good communication from seller and fast delivery.

Bilge pump bolts. So deep in the bilge I could barely see them. Avic got them both. Brilliant tool for boat work.

Used this on a classic Mini I'm restoring. Tight doesn't even cover it in those engine bays. Avic is now essential kit.

EGR valve bolts on my diesel pickup. Deep, awkward, behind the turbo. Got every one without taking anything apart. Saved me a full Saturday.
Bed frame assembly. Corner bolts totally inaccessible with the supplied allen key. Avic from above. Done in minutes. Should come in every flat pack box.
Not much to add that hasn't been said. Reached the bolt. Turned the bolt. Done. The 100 day guarantee made me confident enough to try it. Didn't need the guarantee. Just needed the tool.
Built a workbench with pocket holes. Avic was perfect for the joints inside the frame. Whole thing went together way faster than expected.
Used it to fix a gate hinge that was loose. Bolt was inside a recess with no room to turn anything. Avic sorted it in 2 minutes.
Run a small ranch and use this on the tractor and the feed truck. Had a gearbox bolt seized up last winter that I couldn't get to with anything I owned. Ordered this on a Monday and had the bolt out by Wednesday. Does exactly what it says.
Tried every extension and universal joint combo I had. Nothing worked. Avic worked first try. Now I'm annoyed at all the time I wasted before buying it.
Fixed a squeaky stair. Screws buried under the nosing. Avic reached them without me having to pull the carpet up. Really happy with this.
My hubby liked it .thanks
My husband bought this after spending a weekend swearing at his Transit van. He showed me the bolt afterwards. There's no way anything normal fits there. He's used it three times since. Very happy customer from someone who just wants the car fixed without a mechanic bill.
Used this on my pickup truck's steering box bolts. Up against the frame rail with no swing room. Job done. Simple as that.
Fixed a squeaky stair. Screws buried under the nosing. Avic reached them without me having to pull the carpet up. Really happy with this.
Works exactly as described. Solid build, no play in the mechanism. Only reason it's not 5 stars is I needed a bit of time to figure out the right adapter angle for my specific job. Once I worked it out it was straightforward. Would still buy again.
Intake manifold bolts on my old Jeep Cherokee. Three of the rear ones buried deep. Done in under an hour. Solid tool.

Garage door spring bracket bolts. Right against the wall. Avic got them without me having to move the whole assembly. Solid.
Oil pan bolts on a Subaru. Two of them up against the frame. Normally would have jacked the engine. Avic got them both. Game changer.
Used this on a classic Mini I'm restoring. Tight doesn't even cover it in those engine bays. Avic is now essential kit.
Ordered mainly for one specific bolt on my Golf. Used it on that bolt, then found four more around the engine that I'd been avoiding. Cleared them all in an afternoon. Tool pays for itself in the first job if you've been putting off work because you couldn't reach the fasteners.
Had my BMW in bits trying to reach two E12 bolts on the transmission. Shop wanted $400 just for access. Avic reached them in 10 minutes. Easy math.
Bought it for one job, now I use it every single weekend. Starter bolts, exhaust studs, engine mounts - this thing goes everywhere now.

Cam sensor bolt on my Mustang GT. Buried behind the intake. Every extension I tried just wobbled. Avic zero wobble, came straight out.
Bellhousing bolt on my Silverado 5.3 has been driving me crazy since I bought the truck. Watched three YouTube videos and they all said it was a nightmare. Avic made it a 5 minute job. Wish I'd had this years ago.
Great tool I used mine to reach two winch bolts on my 4 wheeler made it simple didnโt have to pull the rack or front fender off this time I love this tool Thank you.
Tried every extension and universal joint combo I had. Nothing worked. Avic worked first try. Now I'm annoyed at all the time I wasted before buying it.
Starter bolt on my inboard engine. Space is so tight I couldn't get my hand in flat. Avic reached it no problem. Saved a marina visit.

Flat pack furniture assembly. The corner bracket bolts were impossible with a normal allen key at that angle. Avic made it easy.
Timing chain cover bolts on a Ford EcoBoost. Engineering department clearly hated mechanics. Avic evened the score.
Toilet supply line. Nut behind the tank where nothing fits. Avic got it first try. Genuinely relieved I didn't have to call someone.
It works excellent, I have used it on four different pieces of farm machinery hard to reach nuts, I am an older person now and it is very handy for me, stops me from having to stand on a small chair or hang over a piece of Machinery upside down to get the nut off again thank you for the product
Engine bay on my sailboat is basically a coffin. Avic is the only tool that's made sense in there. Use it every time I do any engine work.
Flywheel bolts on my project car. Needed zero swing arc, had zero swing arc. Perfect tool for exactly this kind of job.
Replaced a leaking supply line without calling a plumber. Saved at least $150. Tool paid for itself on day one.
Third time I've recommended this to someone in my street. My neighbour came over borrowing tools for an exhaust bracket job, nothing was reaching. Lent him Avic, job done in 20 minutes. He ordered one before he even left my driveway.
Try it on your worst bolt
Fast US shipping, secure checkout and 14-day returns on unused items. Defects are always covered โ just email support@avichome.com.
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