Park tool chain tool ct3 2a shop favorite updated to work on allchains including 18 316 single speed chains and 5 to 11 speed 332 derailleur chains because of the tremendous force needed to remove chain pins our chain tool is made from investment cast steel features fine thread and comfortable size for easy removal of even the toughest chain pins intended for both single speed and derailleur type chains sliding shelf to accomodate any width chainnotes ct 32 will not peen campagno