Park Tool CP-1.2 Cassette Pliers provide a creative alternative to traditional chain whips. The clamping design allows for one-handed operation providing the leverage needed for stubborn lockrings. Features: One-handed operation provides a great alternative to traditional chain whips Works on cogs from 9 to 24 teeth. Compatible with all 7-12 speed cassettes Works for 3/32" single speed (for 1/8" single speed, see SR-18.2) 35cm (13.7") tool length