The ceramicspeed bb86 SRAM gxp road bottom brackets are compatible with press-fit specific bike frames only. The shell diameter is 41mm id, and when the bearings and cups are pressed in, they fit the 24/22mm SRAM and quarq spindle.There are two versions of the ceramicspeed bearings that come installed in the cups. The first is our low drag, long life standard bearing, with hardened-steel races and our super round ceramicspeed balls. The coated bearing is our second version, which uses those same balls installed on coated, hardened-steel races for longer life and lower drag.Features:2 cups with bearings installed.2 dust covers.1mm spacer.0.5mm spacer.Gxp wave washer.Plastic cable protector.10ml syringe of ceramicspeed all round grease.Sticker sheet.Frame & axle: press-fit bb86 / 24/22,2mmthread: pf w/cupcolor: blackmaterial: alloybearings: cs 61805crank compatibility: SRAM gxp 24 / 22,2mm