Silver — two wrenches
One 150 mm and one 240 mm, polished and plated. Easier to spot when you put it down on a dark engine.
150 mm + 240 mm · 3–22 mm · self-tightening
Universal Self-Tightening Wrench Set
Two double-ended spanners with stepped, serrated jaws. Between them they cover 3 mm to 22 mm, and they do not care whether the head is hex, square, octagonal or already rounded off — the jaw bites where a smooth one slips.
Which finish
Silver
$29.95
Was:
Polished and plated. Easier to spot when you put it down on a dark engine, and it shows rust early instead of hiding it.Sold out
Polished and plated. Easier to spot when you put it down on a dark engine, and it shows rust early instead of hiding it.
Black
$29.95
Was:
Coated finish. Less glare under a work light, and fingerprints do not show.Sold out
Coated finish. Less glare under a work light, and fingerprints do not show.
Save 8%
Both finishes
$54.90
Was: $59.90
Four wrenches: a 150 and a 240 in each colour. One pair stays in the car, one pair stays on the bench — which is the only way a tool is ever there when you need it.Sold out
Was: $59.90. $27.45 each. Save $5.00. Four wrenches: a 150 and a 240 in each colour. One pair stays in the car, one pair stays on the bench — which is the only way a tool is ever there when you need it.
Every set ships as two wrenches, one 150 mm and one 240 mm. Pick a finish, or take both finishes and get four wrenches.
Silver
Total $29.95
- Free US shipping from $49
- 30-day returns on unused items
- Delivery in 7–15 business days
One jaw, a range of sizes
The nut is 13 mm. Or it was, before someone rounded it.
A stepped, serrated jaw does not need to match a size. It drops over the head, takes hold on whatever flats are left, and grips harder the further you turn it.
- 3–22 mm across two wrenches
- Hex, square, octagonal, rounded
- Two wrenches in every set
Why it holds
The teeth do the work a smooth jaw cannot.
A normal open-ended spanner has two flat faces and one size. It fits or it does not, and once a head is rounded it stops fitting for good. The jaws on these are cut into a stepped, toothed profile instead. Drop one over a head and only some of the teeth touch — but those teeth sit into the corners rather than sliding along the flats, and turning the wrench pulls them deeper. That is the whole trick, and it is also why the same jaw covers a span of sizes instead of one.
Tightens as you pull
The jaw profile is asymmetric, so load in the turning direction closes it onto the head instead of spreading it open. Stop pulling and it comes off.
One jaw, a span of sizes
Each end covers a range rather than a single number. Four jaw profiles across the two wrenches is what gets you from 3 mm up to 22 mm.
Works on heads a socket has given up on
A rounded head has no flats left for a socket to grab. There is usually still enough shoulder for a tooth to find. The maker lists hex nuts, pipe nuts, octagonal and special-shaped heads for the same jaw.
The flip side is honest and worth knowing before you buy: teeth that bite leave marks. On a chromed tap fitting, a polished bolt head or a soft brass nut, this will score the surface. For anything you want to stay pretty, reach for a proper size-matched spanner.
The numbers
What is stamped on them
Every range below is read off the wrenches themselves in the manufacturer's own photographs, not off the sales copy.
2
wrenches per set
One 150 mm and one 240 mm. Both are double-ended.
4*
jaw profiles
Two on each wrench, each covering a range rather than one size.
3–22mm*
covered across the set
From the smallest jaw on the short wrench to the largest on the long one.
2
finishes
Black coated, or polished and plated silver.
* Material is listed only as alloy steel. No hardness grade, no torque rating and no standard is published for these, so we are not going to print one.
Jaw ranges
Four jaws across the two wrenches.
- Short wrench, small end
- 3–8
- Short wrench, large end
- 8–17
- Long wrench, small end
- 8–13 mm · 5/16–1/2 in
- Long wrench, large end
- 14–22 mm · 9/16–7/8 in
- Short wrench length
- 150 mm
- Long wrench length
- 225 or 240 mm — see below
- Head shapes
- Hex, square, octagonal, rounded
- Material
- Alloy steel, grade not published
- Finish
- Black coated, or polished and plated
- Ratcheting
- No — reposition each stroke
- In the box
- Two wrenches, no case
Two places the maker contradicts itself
- How long is the long one? The variant names and one of the maker's line drawings say 240 mm. A different drawing from the same set, showing the same wrench, says 225 mm. We have no way to measure one before it ships, so treat it as roughly 23 cm and do not plan a cut to the millimetre around it.
- Is the big jaw 22 mm or 24 mm? One product photo shows 14-24mm stamped next to 9/16-7/8. Another photo and both drawings show 14-22mm next to the same 9/16-7/8. Nine sixteenths to seven eighths of an inch is 14.3 to 22.2 mm, so the inch figures agree with 22 — but we are reporting both rather than deciding for the manufacturer.
Both of these come from the manufacturer's own material. We cannot tell you which one turns up in the box, so here is exactly what each source says.
What you get
Two wrenches in every set
Drawn to scale from the manufacturer's own dimensions, so the difference between the 150 mm and the 240 mm is the real one.
Black — two wrenches
The same pair with a coated finish. Less glare under a work light, and fingerprints do not show.
Both finishes — four wrenches
A 150 and a 240 in each colour. One pair stays in the car, one pair stays on the bench.
Using it
Three things, and none of them is choosing a size
There is no adjusting screw and no size to look up, which is most of the point.
-
Pick the end, not the size
Small head, use the small end. Large head, use the large end. If it drops on and the teeth touch, you have the right end.
-
Seat it, then turn
Push the jaw fully onto the head before you load it. Half-seated is how any wrench rounds a nut, this one included.
-
Pull in the biting direction
One direction closes the jaw onto the head, the other opens it. If it slips, take it off, turn it over and try the other face.
It does not ratchet. On a bolt with room to swing that costs you nothing; in a tight bay you will be lifting and repositioning, same as any open-ended spanner.
Against what you already own
Where this wins, and where it does not
An honest column. There are jobs where a socket set is simply the better tool and we are not going to pretend otherwise.
| Feature | Feature | Fixed spanner | Adjustable wrench | This set |
|---|---|---|---|---|
| Works without matching a size | ||||
| Holds a rounded-off head | ||||
| Takes square and odd heads | ||||
| Nothing to adjust first | ||||
| Leaves the head unmarked | ||||
| Ratchets in tight spaces | ||||
| Best for high torque |
If you already own a full metric socket set and every nut you meet is clean and standard, this is a convenience tool, not an upgrade. It earns its place on rounded heads, odd shapes and the jobs where fetching the right socket costs more time than the job.
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.
BEFORE YOU ORDER
Straight answers
The things we would want to know, including the ones that are not flattering.
How many wrenches do I actually get?
Will it round off my nuts?
Does it ratchet?
What torque will it take?
Is the long one 225 mm or 240 mm?
Is Silver a different material from Black?
Does it come in a case?
Does it replace a socket set?
Two wrenches, one decision
Pick a finish and put them in the car.
Black, Silver, or both pairs so one set lives where the job is. The photo shows the maker's wider range — the set you are buying is the 150 mm and the 240 mm.
Free US shipping from $49 · 30-day returns on unused items
