External BB
PT-6629D
Compatible with Shimano groups
BC1.37" * 24T frame
Width: 68 / 73mm
Bearings: Sealed cartridge bearings 37 * 7 (R414)
Material: CNC machined AL6061 cups
Plastic shell
Finish: Anodized color available
Option PT-6629DCB Ceramic bearings
PT-6629D Drawing download