Shimano XT BB-MT800 Hollowtech II Bottom Brackets.
* Designed for use with Shimano 24mm MTB cranks
* Uses high quality sealed bearings
* Includes 3 x 2.5mm spacers
* Spindle Interface Type: Shimano Hollowtech II
* BB Shell Width (mm): 68 , 73
* Bottom Bracket Shell I.D.: 1.37
* BB/Frame Interface: English
* Defined Color: Black
* Weight: 82.1