Wera's Hex-Plus L-key set is the one tool purchase that quietly stops you rounding out bolt heads. It suits anyone who works on their own bike and has had a hex key slip in a soft alloy bolt. The Hex-Plus profile is the point: the flats are shaped to sit against the bolt face rather than concentrating force on the corners, which spreads load and dramatically reduces the chance of stripping a head. The long arm gives reach into recessed bolts and the short arm gives leverage, and the multi-colour coding means you grab the right size first time instead of trying 3. Key features Hex-Plus profile spreads load and protects bolt heads Colour-coded by size for fast selection Holding function grips the bolt so it does not drop Long arm for reach, short arm for leverage Made in Germany Worth having in the home workshop even if you carry a multi-tool on the bike. Bike bolts are mostly alloy and titanium, and both punish a poorly fitting key.