Prestine PT6629D Bottom Bracket for Shimano Hollowtech II Cranks 68mm
Forged alloy and CNC machined cups
Anodised Cups with Plastic Centre Sleeve and 2 x O-rings.
Double Sealed Cartridge Bearings
English Thread BC 1.37" X 24tpi
Includes shims to fit 68mm and 73mm BB shells
Weight 100g excluding spacers.
Compatible with Shimano Hollowtech II Cranks
24mm Crank Spindle Diameter