First Components Y7946S Hollowtech II Threaded Aluminum Ceramic Bottom Bracket 79mm 24mm Axle for Shimano BikeType_Folding The result: a cassette that's

The result: a cassette that's light

If you want to get the miles in

AA alkaline battery x 2

Center-lock disc mount

First Components Y7946S Hollowtech II Threaded Aluminum Ceramic Bottom Bracket 79mm 24mm Axle for Shimano BikeType_Folding The result: a cassette that'sY7946S BBRight bottom bracket threaded FIRST Y7946S, for 79mm center, 24mm axle, aluminum, for SH Hollowtech II key Model: Y7946S Diameter of crank axis: 24 mm For the middle of the width: 79 mm Bowls: ID 46mm, aluminum Housing: threaded, aluminum Weight: 143 g Color: black BBRight threaded bottom bracket for 79mm center and 24mm axle. The bottom bracket is compatible with the Shimano Hollowtech II key. Made in Taiwan.