Shimano Trapas Hollowtech | SM-BB52 | 68 73mm Accugereedschap The scratching board consists of

The scratching board consists of a wooden board covered with sisalt carpet

including biting and switch rings

Fits on most processor platforms and can be mounted quickly and easily

Screw mounting replaces traditional connection methods such as splints

Shimano Trapas Hollowtech | SM-BB52 | 68 73mm Accugereedschap The scratching board consists ofThe Shimano bottom bracket bracketas adapter set, left + right BSA SMBB52 is a handy accessory for your bike. With this adapter set you can adjust the bottom bracket bracket bag from your bike to the desired width and diameter. This allows you to perfectly tune the bottom bracket bracket bag to your bike. Brand: Shimano Bottom Bracket Width: 68 mm 73 mm Bottom Bracket diameter: 33. 6 33. 9 mm Outside diameter Bottom Bracket bearings: 44 mm Thread: BSA