The Race Face Cinch PF30 Bottom Brackets is ideal for Next SL connecting rod systems with a shaft diameter of 30 mm.  The inner diameter of the slide tube is 46mm.The 6806 high-quality bearings are filled with Phil Wood grease for a smooth and long Race Face Cinch PF30 Bottom Brackets Features Purpose: carriage, cross-country, enduro, MTV, BMX, fatbike Compatibility: systems with a 30 mm shaft with a PF30, D46 mm carriage assembly Size: width 100 (120 without sleeve) Weight: 106 grams