Euro BB cups, spacers and sleeve spacers. A couple of sleeves should be in the box with new cranks. If not, your local shop will have sleeves you can purchase. This set is used, one of the cups was hacked with pliers by the last owner. Never use pliers. I have an original sleeve, the grey one. I also have here a sleeve used on my last frame, the green one. The green one is a different brand than the brand of bottom bracket I am installing, it will still work great if needed despite brand. Sleeves come in different diameters so make sure you ask for the right size if you get one from your local shop. It is good to take your spindle down to the shop so they ensure you leave with the right size.