Sprocket:CR-MO Steel;Teeth: 16T;Compatible with 1/2 x 1/8 and 1/2 x 3/32 single speed chains;With 2X10MM 1X5MM 4X3MM Spacers And Alloy Hub Ring;Compatable with Shimano and Sram Hubs

• High Quality Bike Single Speed Fixie Cassette Conversion Kit Compatable Shimano

High Quality Bike Single Speed Fixie Cassette Conversion Kit Compatable ShimanoCervus