6-in-1 Bicycle Bottom Bracket Tool 12/16-Notch for Hollowtech II - Multifunctional BB Wrench for BBR60/BB80/BB51/PF30

High-strength aluminium. Lightweight design: aluminium alloy material. Strong, high hardness, platinum hollow and lightweight. CNC precision machining of green side corners: CNC controlled one-piece molding, beveled edge, smooth, does not hurt the hand Matte polished: brushed and polished surface, anodic oxide coating, strong texture, brilliant color Crank cover tool trigger: matching crank cover tool removable flower crank cover Specification size selection: 39 mm/41 mm/44 mm/46 mmy/49 mm, 5 centre shaft sizes in one package.