ITEM NAME:Bicycle Crank Extractor Puller+Bottom Bracket Remover+Spanner Repair U CEI.The crank extractor is used to remove square type crank arms, all you need is either a 5/8 or 16mm spanner or just an adjustable spanner, and the bottom bracket remover can be used with either a 24mm socket, wrench or an adjsutable spanner.
