Box One Quick Release Seat Clamp-1 1/4" (31.8mm) Color:Black The bottom bracket features a

The bottom bracket features a lightweight hollow titanium spindle in 108mm or 113mm lengths

FRAME FIT- Older Race

25 Thread - 6mm Allen Slot

These rims can be used for front or back

Works with single spd thru 11 spd chains

Box One Quick Release Seat Clamp-1 1/4" (31.8mm) Color:Black The bottom bracket features aThe Box One Quick Release Seat Clamp 1 1 4" (31. 8mm) has a proprietary surface treatment at the interface of the quick release lever and the clamp. This ensures smooth operation for the life of the clamp without the use of a bushing. Created from cold forged, CNC machined 6061 T6 aluminum this clamp weighs in at only 28 grams (for the 31. 8mm size). FEATURES Titanium Hardware Lightweight Open Frame Anodized Finish Cold Forged Laser Etched Graphics