Sugino square taper BB3. Designed by Sugino for use with RD48 cranksets.Shimano-compatible spindle uses UN74 tool for installation Cartridge BB set with tapered spindle Designed by Sugino for use with RD2 cranksets
| Bottom Bracket Shell I.D. | 1.37 |
| BB/Frame Interface | English |
| BB Shell Width (mm) | 68 |
| Weight | 282 |
| Spindle Interface Type | Square Taper JIS |
| Spindle Length | 103 |
| Defined Color | Black |