Check the listing for details. SHIMANO BB-RS501 BSA Threaded Bottom Bracket 68/70mm Shell Width RS500 Press-Fit. Color: Silver, Condition: New other (see details), Made in Japan. Listed at 29.99 USD. Shimano BB-RS501 BSA Hollowtech II Bottom Bracket The BB-RS501 from Shimano is a high-quality bottom bracket for frames to BSA standard with 68 mm housing width. Usable is the Shimano BB-RS501I with BSA thread for Hollowtech II cranksets with 24 mm shaft. Product features - Shimano BB-RS501 | 68mm shell width | BSA Use: Road, Cyclocross, City, Gravel Model: BB-RS501 BB-Type: HOLLOWTECH II (24mm) Threaded: BSA Threaded BB shell width: 68mm Shell diameter: BSA (BC 1.37) Mounting: screwed Compatibility TIAGRA FC-4700, FC-4703 SORA FC-3550, FC-3503, FC-R3030, FC-R3000 CLARIS FC-R2000, FC-R2030 GRX FC-RX600 FC-RS520, FC-RS510, FC-RS500, FC-RS400 FC-R563, FC-R460, FC-R350 FC-CX50.