The fine thread, special "V"-shaped handle, and super strong replaceable pin make chain removal and installation a breeze. The Park Tools CT-5 works on any bicycle chain (including Hyperglide) and has a "shelf" for loosening tight links. At only 77 grams, it&';s the perfect take-along chain tool. Also works on 9 speed chains as well. Quality tools for every job, even those that involve old school, thread-on freewheels. FEATURES Replaceable pin Removes and installs rivets on all bicycle chains Built-in loosening shelf for tight links Investment cast tool steel Compatible with 5-to-11 speed drivetrains (except Campagnolo 11-speed chain rivets)