Multi-tools
Browse used bike multi-tools for sale from riders across the UK. They span everything from 60g folders carrying 3, 4, 5 and 6mm hex plus a T25, up to 20-function tools that add a chain breaker, spoke keys, a disc pad spreader and a tyre plug driver, and bit-based tools that store hex and Torx bits in a bar end or steerer. This category is for riders choosing what to carry on a ride rather than what to keep on a bench.
What should a bike multi-tool include?
The functions that fix real roadside problems are 4mm, 5mm and 6mm hex for a slipped saddle, twisted bars or a loose bottle cage, a T25 for a rotor or caliper bolt, and a chain breaker or quick-link slot if you ride far from help. Spoke keys only help if you know which size your wheels use. Anything beyond that — screwdrivers, chainring nut wrenches, bottle openers — is weight you carry every ride for a fault you may never have.
Compact or comprehensive?
It depends on how far you are from a lift home. Compact tools stay under about 100g, cover the four or five hex sizes that matter, and disappear into a jersey pocket, which means they actually get carried. Comprehensive tools weigh two to three times that and add the chain and wheel repairs that turn a walk into a ride, which suits long days, bikepacking and remote trails.
Is a multi-tool enough, or do I need proper tools?
A multi-tool is built to fold, so its arms are short and its bits sit at fixed angles, and neither helps against a seized crank bolt or a bottle cage screw hidden behind a frame bag. Using one for bench work is also how the bits get rounded. For servicing at home, individual hand tools give the leverage and reach the job needs, and the multi-tool stays in the seat pack where the wear is low.
What should I check on a used multi-tool?
Rust is the usual problem, because these live in damp seat packs for years — surface marks are cosmetic, but a seized pivot or rust in the chain tool thread is not. Check the hex tips are still square, since a previous owner who used the tool as a bench tool will have rounded the 4mm and 5mm first. Feel the pivot bolt tension: too loose and the bits fold under load, which is how knuckles get hurt. On tools with a breaker, sight along the driving pin for a bend, and on bit-based tools count the bits against the maker's list, as loose bits go missing.
How much should a used multi-tool cost?
Around half the new price is fair for a clean tool with square bits from Topeak, Lezyne, Crankbrothers, Park Tool, Silca or Wolf Tooth, and less than that for anything rusty or missing a bit. Buy new when you cannot see the tips clearly in the photographs, or when the tool is going straight into a seat pack to be forgotten about for two years — that is exactly the case where a rounded bit will only be discovered at the roadside.