The TorqTite bottom bracket line is designed to replace any press fit type on the market. This means no more glue, paste or tape to try and keep things quiet. This unique and patent pending system uses a double threaded internal sleeve to tighten the right and left cups with two spanner wrenches and torque your bottom bracket tight on installation. No more movement or internal fretting of your bottom bracket against your carbon fiber or aluminum frame, just a tightened mechanical system eliminating annoying and unwanted noises. Noises and internal friction that can also sap energy and wattage output. TorqTite guarantees perfect parallel alignment between the bearings even if the frame is not perfectly straight, eliminating lost energy.Fits PF30 frames - 46mm diameter with a shell width from 61mm to 86.5mmSuitable for chainsets with 24/22mm SRAM GXP axleLightweight, machined aluminium cupsStainless Steel Angular Contact bearings