The Park Tool CT5 Mini Brute Chain Tool for 5-12 speed chains is a small chain tool which goes anywhere and actually performs like a full size workshop tool. Incredibly handy to just throw in a pack this fantastic bike tool, weighs in at only 77 grams so won't weigh you down as you cycle. This Park Tool chain tool has been given a fine thread and slide-away T-handle which gives plenty of pressure at the pin head to move stubborn chain rivets easily. What's more, the special V shaped handle, and super strong replaceable pin make chain removal and installation a breeze. The Park Tool CT5 Mini Brute Chain Tool for 5-12 speed chains works on any derailleur chain and has a shelf for loosening tight links. 12 speed compatible. A clean bike works better, looks great and lasts longer so it's a good idea to invest in some top-quality cleaning products that will allow you to get the most out of your cleaning sesh. Park Tool CT5 Mini Brute Chain Tool Features A chain tool that is small enough to go anywhere, yet which performs like a full size workshop tool Fine thread and slide-away T-handle gives plenty of pressure at the pin head to move stubborn chain rivets Includes a loosening shelf to release stiff links after assembly Replaceable driving pin head Works on most bicycle chains, including 10-speed Weighs just 77 grams