This is the SRAM PG 1130 11-Speed Cassette. Features: Compatible with all SRAM 11-speed chains Compatible with 11-speed road splined driver bodies 11-42T cassette fits 10 and 11-speed non-XD driver bodies (1.85mm spacer is required for 11-speed drivers PowerGlide shift technology for smooth and positive shift performance Wide range of gearing optionsa perfect fit for any ride Compatible with non-XD driver bodies Specifications: Type: Cassette Speeds: 11 Speed Drive Type: Shimano HG (11/12 Speed Road MTB) Color: 11-42T - Black) Weight: 538g (11-42T) Sprocket Configuration: 11-42T: 11-13-15-17-19-22-25-28-32-36-42T