Question 1

What's the difference between a combination wrench and a spanner?

Accepted Answer

In the UK, the terms are used interchangeably — a combination wrench and a combination spanner are the same tool. It has an open end on one side and a closed ring end on the other, both sized to the same nominal measurement. The "combination" refers to having both ends on a single tool, not two different sizes.

Question 2

Which combination wrench sizes do I actually need for car maintenance?

Accepted Answer

For most modern European cars, a metric set covering 8mm, 10mm, 12mm, 13mm, 15mm, 17mm, and 19mm will handle the vast majority of fasteners you'll encounter. The 10mm and 13mm get used constantly — if you only buy two spanners, start there. For older British vehicles or American cars, add imperial sizes: 3/8", 7/16", 1/2", 9/16", and 5/8" cover most bases.

Question 3

Are cheap combination wrenches worth buying, or should I avoid them?

Accepted Answer

Cheap wrenches are fine for occasional light use, but they carry a real risk of rounding bolt heads if you apply serious torque — and a rounded bolt can cost far more to fix than the money saved on the tool. Below 8 £, you're looking at softer steel and looser tolerances. For anything beyond occasional DIY, spending up to 14 £ on a branded set from Draper Tools or KS Tools is a much safer investment.

Question 4

What does the 15° offset on the ring end actually do?

Accepted Answer

The 15° offset means the ring end sits at an angle to the handle, which lifts your knuckles clear of the work surface and gives you a better swing arc in tight spaces. It's the industry standard for combination wrenches. When you run out of swing room, flip the spanner over — the offset works in both directions, giving you a new 15° bite each time. Some professional wrenches offer 22.5° or 30° for even tighter access.

Question 5

Is Draper Tools actually good, or just popular because it's everywhere?

Accepted Answer

Draper Tools is genuinely solid mid-range — not the sharpest precision tools on the market, but reliable, well-priced, and widely stocked at Screwfix, Toolstation, and Amazon. Their dominance in this category (nearly half the catalogue) reflects real market presence, not just marketing. For professional daily use, Wera, Gedore, or Bahco will feel noticeably better. But for a home mechanic or occasional trade use, Draper Tools represents honest value.

Question 6

Can I use combination wrenches on metric and imperial fasteners interchangeably?

Accepted Answer

No — and this is a common cause of rounded bolt heads. Metric and imperial sizes are close but not interchangeable: a 14mm wrench on a 9/16" bolt (14.29mm) will slip under load. Always use the correct size for the fastener system. If you're unsure, a set of both metric and imperial is the safest approach, particularly if you work on mixed-origin machinery.

Question 7

What should I look for in a combination wrench set in 2026?

Accepted Answer

Prioritise forged alloy steel (chrome-vanadium as a minimum), a 15° ring end offset, and a chrome or satin finish for corrosion resistance. Check that the set covers the sizes you actually use rather than padding out with obscure sizes. DIN 3113 or ISO 691-1 certification is a useful quality indicator. Avoid sets where the packaging mentions only "carbon steel" without specifying forged — it usually means lower-grade manufacture.

Combination Wrenches Price Comparison

Combination Wrenches price comparison UK