T47 is a newer bottom bracket shell design, utilizing the oversized interface of PF30 and EVO386, but with the benefit and peace of mind of a threaded interface.This bottom bracket allows you to install Shimano and other 24mm diameter thru-axle cranks into a T47 shell.It´s compatible with 86mm wide frames.There are 2 versions:Standard and Coated Bearings.CeramicSpeed Bearings come installed in cups and are connected through the shell.Both have super round CeramicSpeed Balls and hardened-steel races.The CeramicSpeed Coated Bearings have an additional attribute:a 3-micron thick metallic layer over the races.This addition makes the races harder and smoother, lowering drag and increasing life.