Under the hood
Clamps, brackets and hose fittings in the 12 to 20 mm band the 8 inch covers. One tool in your hand instead of a socket set spread across the wing.
Six jaws · hex, square or round · 7–20 mm
Universal Adjustable Wrench
Drop the head over a nut and squeeze. Six steel jaws close in together and grip whatever shape is in there — hex, square or round — so there is no size to pick and nothing to set. The 6 inch covers 7 to 14 mm, the 8 inch covers 12 to 20 mm. Between them they cover the whole span without a gap, which is why most people here take both.
Which size
6 inch
$27.99
Bought separately:
Takes 7 to 14 mm — M3 up to M8 nuts. The bike, the furniture, the small stuff. Nothing above 14 mm.Sold out
Takes 7 to 14 mm — M3 up to M8 nuts. The bike, the furniture, the small stuff. Nothing above 14 mm.
8 inch
$29.99
Bought separately:
Takes 12 to 20 mm — M6 up to M12 nuts. The car, the mower, the gate hinge. Nothing below 12 mm.Sold out
Takes 12 to 20 mm — M6 up to M12 nuts. The car, the mower, the gate hinge. Nothing below 12 mm.
Best valueBoth sizes
$52.99
Bought separately: $57.98
7 to 20 mm with no gap in the middle, for less than the two cost on their own — and this is the only option that crosses the free shipping line, so you keep the postage too.Sold out
Bought separately: $57.98. $26.50 each. Save $4.99. 7 to 20 mm with no gap in the middle, for less than the two cost on their own — and this is the only option that crosses the free shipping line, so you keep the postage too.
The two sizes barely overlap: one stops at 14 mm and the other starts at 12 mm. Buy one and you are choosing which half of the nuts in your house you can turn.
Both sizes
Total $52.99
- Free US shipping from $49
- 30-day returns on unused items
- Delivery in 7–15 business days
Turn it over
Watch the six jaws close
Drag to turn the model while the handles come together. All six jaws move inward at once around the opening, which is what lets one head sit on a hex nut, a square head or a round shaft without anything to set first.
This is a 3D model we built in code from the maker's own photographs, to the dimensions it publishes for the 8 inch size. It is not a photograph of the item, and the motion is our illustration of how the head works. The photographs in the gallery above are the maker's own.
One head, every shape
Stop hunting for the right size.
Six jaws close in around the fastener instead of one fixed opening sitting on it. Hex, square, round, metric or imperial, rounded-off or painted over — if it fits in the hole, the jaws find it.
- 6 inch takes 7–14 mm, 8 inch takes 12–20 mm
- Hex, square and round in one head
- Alloy steel, no loose parts to drop
How the head works
Six jaws, closing together.
A normal adjustable wrench has two faces and a screw you have to keep re-setting. This has six jaws spaced around a round opening, each riveted to the plate. Squeeze the handles and all six come inward at once, so they meet the fastener on six sides rather than two.
Nothing to set
There is no thumbwheel and no size to choose. Put the head over the fastener, close your hand, and the jaws take up the slack themselves.
Hex, square or round
Six faces closing in will sit on a hex nut, a square head or a round shaft, which is what the three shapes on the maker's own graphic are telling you.
Grips what a flat wrench slips off
Six points of contact instead of two is the argument for a rounded-off nut or a painted-over bolt. We have not tested that against a torque figure, because the maker does not publish one.
The maker publishes no torque figure and names no steel grade beyond calling it alloy steel.
The specifics
What each size actually takes
The two sizes are not big and small versions of the same range — they are two different ranges that meet in the middle. Read the clamping rows before you pick, and read the last two rows for the places the maker's own numbers do not line up.
7–14mm*
the 6 inch range
M3 up to M8 nuts. Imperial 1/4 up to 9/16 in.
12–20mm*
the 8 inch range
M6 up to M12 nuts. Imperial 1/2 up to 3/4 in.
6jaws*
in each head
Each riveted to the plate; all six close together.
3shapes*
it will sit on
Hex, square and round, on the maker's own graphic.
200mm*
the 8 inch length
About 7.87 in, and 120 mm across the handles.
155mm*
the 6 inch length
The maker's drawing gives 140 mm for the same tool. See the table.
* Marked figures are the maker's own and are not measured by us.
Full specifications
An alloy steel wrench with a six-jaw self-setting head, sold in a 6 inch and an 8 inch size. Both work on hex, square and round fasteners, in metric or imperial.
- 6 inch — clamping range
- 7 to 14 mm Large end 13 mm or an M8 nut; small end 6 mm or an M3 nut
- 6 inch — imperial
- 1/4, 5/16, 7/16, 1/2, 9/16 in The maker also lists 3/16 in, which is 4.8 mm — below the 6 mm it states on the same graphic
- 6 inch — size
- 155 mm long, 97 mm across Its dimension drawing says 140 mm long for the same tool
- 8 inch — clamping range
- 12 to 20 mm Large end 20 mm or an M12 nut; small end 11 mm or an M6 nut
- 8 inch — imperial
- 1/2, 9/16, 5/8, 11/16, 3/4 in
- 8 inch — size
- 200 mm long, 120 mm across About 7.87 by 4.72 in
- Head
- Six riveted jaws around a round opening They close together when you squeeze the handles
- Fastener shapes
- Hex, square and round The three shapes on the maker's own graphic
- Material
- Alloy steel No grade is published
- Handles
- Coated, with a red band at the pivot
- Torque rating
- None published Nothing tells you how hard you may lean on it
- Overlap between sizes
- 12 to 14 mm only Below 12 mm needs the 6 inch; above 14 mm needs the 8 inch
In the box
- One wrench in the size you pick, or one of each
One wrench per size. The maker lists nothing else — no case, no pouch, no spare jaws.
Where it earns its keep
The five jobs the maker names
Electrical, household, mechanical, motorcycle and bicycle work. What they have in common is a fastener you meet once, in a size you do not have a socket for, usually in a place you cannot swing a ratchet.
Bikes and motorcycles
Hub nuts, pedal flats and fender bolts, mostly down in the 7 to 14 mm band where the 6 inch lives. It will sit on a nut someone has already rounded off.
Around the house
Coach bolts in a frame, furniture fixings, a tap connector behind the machine. The head goes over the fastener from any angle, so you do not need the swing a ratchet wants.
Living with it
Drop it on, squeeze, turn.
-
Pick the size by the fastener, not the job
Under 12 mm is the 6 inch. Over 14 mm is the 8 inch. Between the two, either will do. That narrow overlap is the whole reason this page keeps pointing at the pair.
-
Drop the head over it and close your hand
No thumbwheel, no size to dial in. The six jaws take up the gap themselves, which is why it works just as well on a square head or a round shaft as on a hex nut.
-
Turn, release, reposition
Open your hand and the jaws let go, so you can lift the head off and drop it back on at a new angle. In a tight spot that beats fighting for the swing a ratchet needs.
That is the whole method. The one thing to keep in mind is the range: this is a hand tool with no published torque figure, so it is for the fastener you want undone, not for leaning on a seized one with a length of pipe over the handle.
6 inch, 8 inch, or both
The two sizes meet at 12 mm and stop at 14.
This is the only comparison that matters here, and it is made entirely out of the maker's own clamping figures. Whichever single size you buy, there is a band of fasteners in your house it will not turn.
| Fastener | 6 inch only | 8 inch only | Both sizes |
|---|---|---|---|
| M3 to M5 — 7 to 10 mm | |||
| M6 to M8 — 11 to 13 mm | ✓ from 12 mm | ||
| M10 — 16 to 17 mm | |||
| M12 — 18 to 20 mm | |||
| 1/4 to 7/16 in | |||
| 5/8 to 3/4 in | |||
| Fits a bicycle toolbag | ✓ 155 mm | A bit long at 200 mm | ✓ take the 6 inch |
| Leverage on a tight nut | Short handles | ✓ 200 mm of handle | ✓ reach for the 8 inch |
| Ships free on its own | ✗ under $49 | ✗ under $49 |
Ranges are the maker's own. Buying both costs less than the two on their own, and it is the only option on this page that passes the $49 free shipping line.
Free shipping on orders of $49 or more. Below that, standard shipping is a flat $4.95 to any of the 50 US states. Delivery takes 7–15 business days from the time you order, and that window already includes the 1–2 business days we take to process. Shipping & Delivery.
30-day returns. Items must be unused and in their original packaging. Email support@nexuratool.com with your order number to start a return. Returns & Refunds.
30 days from delivery. Email support@nexuratool.com with your order number and what you want to return. We reply with a return address — do not send anything back before you have it, or we cannot match the parcel to your order.
What we can take back: unused items in their original, undamaged packaging. Adhesives, sealants and lubricants cannot be returned once opened; the same goes for any item with a broken safety seal. That is a safety and hazardous-goods rule, not a preference.
Who pays: return shipping is paid by you, except when the item arrived damaged, faulty or was not what you ordered — then we cover it and refund the original shipping too.
Refunds go back to the original payment method within 5 business days of the return reaching us. Full returns policy.
QUESTIONS PEOPLE ASK
Before you order
Which size should I buy?
Is the pair actually cheaper?
Will it really grip a rounded-off nut?
Does it work on square and round things too?
Metric or imperial?
How long is the 6 inch, really?
What is it made of?
Does it replace my socket set?
7–20 mm with both · hex, square, round
One of each, and the gap disappears.
The 6 inch stops at 14 mm and the 8 inch starts at 12. Take the pair and you cover 7 to 20 mm with nothing missing in the middle — for less than the two cost on their own, with the shipping thrown in. Free US shipping from $49, and 30 days to return unused items.
