Hope pf46 press fit sram bottom bracket 30mmcompatible with all of srams chainsets that have 30mm spindle diameters, hopes fully sealed pressfit bottom bracket brings you smooth and durable operation. Rather than simply being pressed into place, this bottom bracket comes with a threaded central sleeve, which prevents any slippage or play. Durable steel cartridge bearings ensure that the smooth and unrestricted rotation lasts ride after ride.features material cups cnc machined aluminium bearings steelbearings steel sealed cartridge bearingssuits bb shell size 46mm x 68 or 73mmcup diameter 46mmcrank spindle diameter 30mmmanufacturer reference code bbpf467330ssnspf46 bottom brackets are designed to fit bikes with a 46mm threadless bottom bracket shellthe bearing cups thread into a centre tube to give a very secure, safe fitcups pressed in and held in place by a screw in centre tube to prevent slipping and playalso compatible with other brands of chainsets with 30mm spindlesspecific fitting tool required sold separatelyeasy to service and replaceable partsweight 112g approx.buy hope components from chain reaction cycles, the world's largest online bike store.