41mm by 16 spline cup tool with an inner bearing guide insert for cranksets with 24mm bearings (Shimano)
or if it is made of plastic
The extra-wide double-row design greatly reduces flex in the axle of the rear hub or suspension linkage while doubling the bearing contact area
Puller 20-21 CR-MO - Phosphate-Treated CR-MO steel
This cup set does not come with bearings like our other bottom bracket solutions since the bearings are attached to the Ultra Torque (Non-Ekar) crankset
BKC-0811 - Italian Thread-In, Ceramic-Hybrid, XD15, Angular Contact, Bearing Bottom Bracket for Italian-threaded framesets and Shimano 24mm Cranksets 428420 41mm by 16 spline cupBKC 0811 Italian Thread In, Ceramic Hybrid, XD15, Angular Contact, Bearing Bottom Bracket for Italian threaded framesets and Shimano 24mm Cranksets You may find the following tools useful for installation and servicing: For bottom bracket installation: BBT 44x16 24 Pro Cup socket tool for 44mm x 16 spline bottom brackets and Shimano 24mm spindle cranksets BBT 010 Bottom Bracket Flat Wrench for 44mm x 16 spline and 52mm x 16 spline BBT 001 B Shimano