To alleviate poor shifting and uneven drive train wear
WIDE BASE DESIGN: Reduces stress on the freehub body and improves reliability
Makes gear cleaning quick and easy
Non-directional design
MATERIAL: SCM 415 hardened steel
Park Tool CM-5.3 Cyclone Chain Scrubber Machine Color:Blue To alleviate poor shifting andPark Tool CM 5. 3 Cyclone Chain Scrubber Machine Cleans bicycle chain quickly, easily, and effectively without the hassle and mess of removing the chain from the bike Uses a large solvent reservoir, hundreds of rotating bristles, and a two step cleaning process to get chains really clean, improve shifting performance, and extend the life of the chain and other expensive drivetrain parts Works with all multi speed bikes (5, 6, 7, 8, 9, 10, 11, and 12