Bicycle Components & Accessories
SRAM PG1050 12-28T 10 Speed Cassette
Technology: Power Glide Recommended Chain: PC-1090R, PC-1090, PC-1070, PC-1050, PC-1030 Lock Ring Material: Steel / Pad printed finish Sprocket Material: Heat treated steel / Blast Silver
https://www.bizrate.co.uk/bicyclecomponents_accessories/sram-pg1050-12-28t-10-speed-oid5186051699.html