Some Colnago bikes use the standard T45 bottom bracket. Sometimes it is known as ThreadFit82.5, or simply ThreadFit. It has a width of 82.5 mm and threaded flanges. This kit allows you to install Quarq and SRAM cranks with a 24/22 mm spindle on your Colnago. The CeramicSpeed bearings are installed in the cups and are connected through the frame. There are 2 versions: Standard and Coated Bearings. Both have CeramicSpeed super round balls and hardened steel races. The Coated ones have an additional feature: a 3-micron thick metal layer over the races. This addition makes the races harder and smoother, reducing friction and increasing lifespan. In the package: 2 threaded cups with bearings installed 2 dust covers 1mm Spacer 0.5mm Spacer Wavy washer GXP Spacer tube All Round Grease