Italian threaded bottom brackets for Italian threaded shells are typically found on Italian-brand road bikes. The shell is 70mm wide and has an internal diameter of 35mm. This kit contains all the parts needed to install 24mm spindle cranks into an Italian threaded shell. These cranks are from Shimano, FSA, and others. CeramicSpeed bearings are pressed into threaded cups, which are then screwed into the frame. These bearings are available in a Standard or Coated version. CeramicSpeed super round and super slippery balls roll on hardened steel races in both versions. The Coated version features a metallic coating applied to the races, making them even harder and smoother, resulting in increased durability and lower friction. In the box: 2 threaded cups with bearings 2 dust covers with integrated spacers Spacer tube All Round Grease Sticker