Air impact wrench buying guide
Updated: 22 October 2026
You have a compressor in a UK garage and amazon.co.uk titles that say air impact driver, impact wrench and impact gun as if they were one tool. This air impact wrench buying guide puts the decisions in order: the anvil, the air the listing actually states, whether the torque figures agree, and what is in the box. Prices and star lines for the nine listings sit in the [air impact driver comparison](/hub/tools/air-impact-driver), read in October 2026. Peter F. is the DIY & tools editor. There was no laboratory test, and a qualifying purchase can earn a commission at no extra cost to you.
You have a compressor in a UK garage and amazon.co.uk titles that say air impact driver, impact wrench and impact gun as if they were one tool.
You have a compressor in a UK garage and amazon.co.uk titles that say air impact driver, impact wrench and impact gun as if they were one tool. This air impact wrench buying guide puts the decisions in order: the anvil, the air the listing actually states, whether the torque figures agree, and what is in the box. Prices and star lines for the nine listings sit in the air impact driver comparison, read in October 2026. Peter F. is the DIY & tools editor. There was no laboratory test, and a qualifying purchase can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Drive | Stated air | In the box | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  BESWELL BESWELL BW-112BN | 1/2 inch square | 90–120 and 120–190 psi, no CFM | Wrench only | 8.1 | about £39.99 | View offer |
| Alternative |  Proster Proster 7286 | 1/2 inch square | CFM and psi not stated | 13–24 mm sockets and a case | 7.4 | about £74.99 | View offer |
| Best value |  Blue Spot Tools Blue Spot 07945 | 1/2 inch square | 4.5 CFM at 90 psi | Gun only | 6.8 | about £26.97 | View offer |
On this page
Driver, wrench or gun
Homebuilding’s UK guide separates a hex chuck, used on screws, from the square anvil an impact wrench uses on sockets. An adapter is a poor substitute, because the drive and the socket take the shock. Eight of the nine tools here are sold as 1/2 inch square-drive guns, the size Metro Sales points at for car wheel nuts at home. That is a starting size, not a promise that every gun will undo your nuts.
The Ingersoll Rand listing at about £148.42 is the exception. The title says 2102XPA-QC, the model field says 2101XPA, the part number says 2101XPA-QC, and the table states a 0.25 inch chuck. Treat it as an unsettled compact air tool. The 2130XP table also says Hex, so read the row rather than the title.
Air before brand
Algar Air’s UK guide puts a typical 1/2 inch impact wrench at about 4–6 cubic feet per minute at 70–90 psi, and marks that band as a guide rather than a duty for a named model. Metro Sales suggests a home-garage starting point of at least 3 hp and a 50 litre tank, with a 10 mm hose for a 1/2 inch gun and 8 mm only for lighter tools. Those are dealer rules of thumb. They are not a measurement of these nine guns.
Only the Blue Spot 07945 states consumption: 4.5 CFM, also printed as 113 litres per minute, at 90 psi, with a 1/4 inch BSP inlet. The Hilka 85151617 set recommends 90 psi and does not state CFM. The BESWELL BW-112BN prints both 90–120 psi and 120–190 psi. The BW-112K prints 120–190 psi. None of those three states CFM. If consumption is blank, you cannot prove the gun will run on your compressor. Hose bore, and why tank litres are only a buffer, is on the compressor page.
How to read a torque line
The BESWELL BW-112BN shows why you should not rank on a title. The title says 1,600 Nm and a bullet says 1,180 ft-lb. Those two convert into each other, so they are one claim in two units. The specification table then prints 359.7 inch pounds, about 30 ft-lb, and the page never says which test produced which number. You are looking at a conflict on the listing, not at a laboratory result.
The BW-112K title says 2,230 ft-lb, while the bullets pair 1,645 ft-lb with 2,230 Nm. Both Hilka guns state 230 ft-lb, and UK reviews on the bare Hilka include a wheel nut that would not undo and a socket that could be stopped by hand. The Blue Spot prints 312 Nm and 230 lb-ft, which agree, on 15 reviews. The compact Ingersoll Rand table prints both 700 ft-lb and 55 ft-lb. Read whether the title, the bullet and the table say the same thing before you pay more for a larger number.
Kit, sockets and the review sample
A bare gun is not a wheel kit. Blue Spot, Hilka 85111200, BW-112BN and BW-112K are the tool only. The Hilka 85151617 lists a socket, an extension, an oil pot, a mini oiler, a hex key, a nipple and a case, but not the socket sizes, and UK reviews often say the case arrived smashed. ORAZIO lists eight sockets from 12 to 24 mm. Proster lists 13 to 24 mm. The 2130XP bullets list 17, 19 and 21 mm, while another field names a ratchet part instead. You still need an impact socket rather than a chrome hand socket.
Star lines are not torque. BW-112BN is 4.5 from 881 reviews, and UK texts mention seized suspension bolts. The 2130XP is 4.6 from only eight reviews, and none of those published texts is from the UK. The bare Hilka is 3.9 from 86, with repeated no-power comments. A twin-hammer name is not a shared test against the Blue Spot’s single hammer. Sort by review count only after you have rejected any row whose drive or air figure you cannot use.
Common questions
Is an air impact driver the same as a 1/2 inch air impact wrench?
Not in this set. A driver chuck is hex. A 1/2 inch air impact wrench has a square anvil for sockets. Eight of the nine listings are sold as 1/2 inch wrenches or kits. The compact Ingersoll Rand page states a 0.25 inch chuck and three model strings, so it is not a settled hex driver. For a car wheel nut, start with a 1/2 inch square drive and an impact socket.
What should I check before I trust the newton-metre number?
Read the bullet and the table on the same page. On the BW-112BN, 1,600 Nm and 1,180 ft-lb are one claim in two units, but the table prints 359.7 inch pounds. On the BW-112K the title says 2,230 ft-lb while the bullets pair 1,645 ft-lb with 2,230 Nm. If those lines disagree, the title is not a test. Then look at the review count.
Do I need sockets in the box?
You need impact sockets, and they need not be in the same carton. Four guns here are tool only. ORAZIO lists 12 to 24 mm, Proster lists 13 to 24 mm, and the 2130XP bullets list 17, 19 and 21 mm. The Hilka set lists a socket and does not name the size, so you still check it against the nut.
What air pressure and CFM should the listing state?
A useful listing states pressure at the tool and consumption. Algar’s guide for a typical 1/2 inch wrench is about 4–6 CFM at 70–90 psi, labelled as a guide. Only Blue Spot 07945 states both 90 psi and 4.5 CFM here. A blank CFM line means you are guessing whether your compressor can feed the gun.
Is a twin hammer automatically better than a single hammer?
No. Twin hammer is a claim on the BESWELL, ORAZIO, Proster and 2130XP pages. Blue Spot states a single hammer. None of these listings shares a test that separates the hammer from the hose and the fastener. A twin-hammer gun on a starved airline can still only rattle. Read the air figure and the reviews first.
What do I still buy if the gun arrives alone?
Plan for impact sockets in your sizes, a coupling that matches the inlet, air-tool oil, and a hose wide enough for a 1/2 inch gun. The Hilka set is the only box that lists a mini oiler, and reviews say the grade was not explained. A torque wrench is separate, because none of these guns finishes a wheel nut to a handbook figure.
Related pages
Sources
Public UK sources from the research digest, used for this page in October 2026. Prices, stars, review counts and specification lines are from the nine amazon.co.uk listings. Noise and vibration duties apply at work. They are not a certificate for a domestic gun, and no listing here was laboratory-tested.
- Control of Noise at Work Regulations 2005, regulation 4 (retrieved October 2026)
- HSE INDG362, Noise at work (retrieved October 2026)
- HSE, Hand-arm vibration regulations (retrieved October 2026)
- HSE HSG39, Compressed air safety (retrieved October 2026)
- ISO 11148-6:2012, Hand-held non-electric power tools, impact wrenches (retrieved October 2026)
- Homebuilding, Impact driver vs impact wrench (retrieved October 2026)
- Algar Air, Air tool consumption guide (retrieved October 2026)
- Ingersoll Rand safety information, via Cromwell (retrieved October 2026)