PRO Team Chain Whip And Bottom Bracket Tool - Shimano 12 Speed NoAusPost they are replacement cleats

they are replacement cleats

the first time (or even the first couple of times) you use it you may see your chain turn black

Available in adult and youth sizes:

The "square edges" or "rounded edges" refers to the outer edges of the rotor

PRO Team Chain Whip And Bottom Bracket Tool - Shimano 12 Speed NoAusPost they are replacement cleatsUse this tool for the installation and removal of 10, 11, and 12 speed cassettes. Also included is a fitting to install and remove Shimano XTR and Dura Ace bottom brackets, as well as Shimano STEPS Hollowtech II e bike motor lockrings. Who's this item for: Riders and home mechanics that need to install or remove a cassette or threaded bottom bracket. Compatibility: The chainwhip is suitable for use on 10 12 speed cassettes. The bottom bracket fitting