Combination spanner buying guide
Updated: 22 October 2026
You have a modern car, or a flat full of metric bolts, and the listing says 6–22 mm for less than £15. A combination spanner buying guide starts with the fastener system, then the printed sizes, then whether the ring is plain or a ratchet. The [combination spanner comparison](/hub/hand-tools/combination-spanner) holds the eleven amazon.co.uk listings and the file prices. This page is that order. Peter F., DIY and tools editor, wrote it on 22 October 2026 from those listings and public UK sources, not from a lab test. A qualifying purchase can earn a commission at no extra cost to you.
You have a modern car, or a flat full of metric bolts, and the listing says 6–22 mm for less than £15.
You have a modern car, or a flat full of metric bolts, and the listing says 6–22 mm for less than £15. A combination spanner buying guide starts with the fastener system, then the printed sizes, then whether the ring is plain or a ratchet. The combination spanner comparison holds the eleven amazon.co.uk listings and the file prices. This page is that order. Peter F., DIY and tools editor, wrote it on 22 October 2026 from those listings and public UK sources, not from a lab test. A qualifying purchase can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Printed sizes | Ring | Named standard | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  BGS BGS 1197 12-piece combination set | 6–22 mm, skips 15, 16, 18, 20, 21 | Plain 12-point, 15° | DIN 3113-A | 8.1 | about £12.80 | View offer |
| Alternative |  Qnkaa Qnkaa 12-piece ratchet combination set | 8–19 mm, every step | 72-tooth ratchet, 5° | None named | 6.8 | about £29.95 | View offer |
| Best value |  Hilka Hilka 17161102 11-piece metric set | 6–19 mm, skips 7, 9 and 16 | Plain, no ratchet | None named | 7.6 | about £8.68 | View offer |
On this page
Start with the fastener system
A combination spanner carries one size on both ends: an open jaw and a ring. For a UK car of the last few decades, that size is metric, across the flats. Haynes treats virtually all cars of the last 30 years as metric. If the heads are AF or Whitworth, a metric roll is a different purchase, and a near size rounds the nut. Hagerty UK notes that metric became usual in the 1970s, and that 13 mm is not 1/2 inch AF. The classic split, including a Mini, is on the combination spanner for car repair page.
Read the sizes, not the range
“6–22 mm” is a span, not a contents list. BGS 1197’s 12-piece pattern skips 15, 16, 18, 20 and 21 mm. If the plug is 15 mm or 16 mm, that wallet stops you. Hilka 17161102 skips 7, 9 and 16 mm. Qnkaa runs every millimetre from 8 to 19. Other listings state a range or a piece count and do not itemise. If a stated size is absent, the Consumer Rights Act 2015 gives 30 days to reject goods that are not as described, including in Northern Ireland. Which gap matches a job is on best combination spanner sets.
Plain ring, ratchet, and what a standard name means
A plain ring is fixed. A ratchet ring has a pawl so you can take a short swing without lifting the tool off. A 72-tooth claim is a 5-degree swing, not a strength rating. Draper claims 100 teeth and 3.6 degrees. DISEN’s bullets say not to use the ratchet on heavily rusted or seized fasteners, because the pawls can be damaged. If the nut is already free, the ratchet earns its price. If you are breaking a rusty bolt, the plain ring is the tool. The condition is on combination spanner vs ratchet spanner.
Neilsen states carbon steel. Amtech’s bullets say chrome steel and the material field says carbon steel. Only BGS cites DIN 3113-A, a shape line, not ISO 1711-1. Nobody here cites ISO 1711-1.
Fields that should stop the order
Some fields disagree with the title. Amtech’s measurement field says SAE while the title says 6 mm to 19 mm. The unbranded 21 mm ratchet has a jaw field of 32 mm and no review line. EGOFINE’s length is given as 10 mm, the same figure as the jaw. Hilka 17161102’s 100 g and 19 mm length cannot describe eleven spanners. DURATECH’s “up to 30 percent greater grip” line is the seller’s wording, not a figure measured here. More money buys a ratchet or a longer stated run. It does not buy a full size list if the page never printed one. If a field and the title cannot both be true, treat the size as unknown until you measure it.
Common questions
What should I check before the brand?
Check the fastener system, then the printed sizes, then whether the ring is plain or a ratchet. BGS 1197 names DIN 3113-A and still omits 15, 16, 18, 20 and 21 mm. The brand line does not fill those gaps. Read the millimetres in the bullets before the stars.
Does 6–22 mm mean every size?
No. The 12-piece pattern used by Laser Tools, Clarke and BGS 1197 is 6 through 14 mm, then 17, 19 and 22 mm. That is five missing steps. Hilka 17161602 says 6–22 mm and does not print the list at all. Treat an unitemised range as unknown until the roll is in your hand. If a stated size is missing, the 30-day right to reject goods that are not as described is the route, not a guess.
What does DIN 3113-A on BGS 1197 promise?
The seller cited a shape standard, and the listing adds a 12-point ring at 15 degrees. It does not promise a proof-torque test, and it is not ISO 1711-1. No other listing here cites either standard. Use the name as a signal that the shape was specified, then still read the gaps. We did not load these spanners on a torque rig.
Is carbon steel enough at home?
Neilsen states carbon steel. Amtech’s material field says carbon steel while the bullets say chrome steel. For light nuts that already turn, carbon steel can be enough, though UK reviews of the Neilsen report missing pieces and poor fit. On a seized bolt, neither label replaces a ring that fits. The hardness standard nobody here cites is ISO 1711-1.
Why does the Amtech listing say SAE?
The title says 6 mm to 19 mm. The measurement field says SAE. Those lines disagree. One UK review mentions a ratchet the bullets do not include, and buyers call the holder impractical. If you order it at £9.99, confirm the spanners are metric when they arrive. The price does not resolve the conflict.
When is a ratchet the wrong first buy?
When the nut is rusty, or you want a first metric roll to stay cheap. A 72-tooth ratchet shortens the swing to about 5 degrees once the nut is free. DISEN warns that seized fasteners can damage the pawls. Start with a plain ring if breaking loose is the job.
Related pages
Sources
Sources from the research digest, last checked on 22 October 2026.
- HSE, PUWER overview (retrieved 22.10.2026)
- HSE, INDG229 Using work equipment safely (retrieved 22.10.2026)
- HSE, repetition and upper-limb disorders (retrieved 22.10.2026)
- ISO 1711-1:2019 (retrieved 22.10.2026)
- Consumer Rights Act 2015, section 22 (retrieved 22.10.2026)
- nidirect, buying goods and services (retrieved 22.10.2026)
- Hagerty UK, choosing spanners for DIY (retrieved 22.10.2026)
- Wheels Alive, threads, spanners and things (retrieved 22.10.2026)