Shimano HG31 11-34T Mega Cassette 8Sp

Shimano Altus CS-HG31 free hub 8-speed cassette for mountain bikes, multi-speed cruisers, and comfort bicycles. built with eight steel cogs in tooth sizes 11, 13, 15, 17, 20, 23, 26, 34. Weighs 300 grams (10.582 oz). Fits cranks with one, two, or three chainrings. Bike shop quality replacement part for 8-speed, 16-speed, or 24-speed drivetrains.