| has gloss | eng: A peanut butter wrench is the name used in North America for a single-ended box wrench or ring spanner used in cycling to tighten older 15mm crank bolts, or the wheel nuts (track nuts) on hubs with solid axles commonly found on track bicycles, particularly the 15 mm wrench made by Campagnolo. Crank bolt spanner or crank spanner is another name for this tool. This is the only one-piece wrench that can be used to tighten or loosen the bolt or nut which holds the crank to a square-taper bottom bracket spindle (although a thin-walled 15mm socket and handle will also serve), whereas any wrench/spanner of the correct size will tighten or loosen wheel nuts. |
