Amazon.com : BOLANY Bike 10 Speed Cassette 11-25T/32T/36T/40T/42T/46T/50T Fit for MTB Bike, Road Bicycle, Lightweight Freewheel Super Light, Compatible with Shimano SRAM Sunrace (Black+Silver 11-40T) : Sports & Outdoors
KCNC - Super light 12 - speed MTB cassette | 10-52 tooth for Sram XD 332g
Bike cassettes explained: how they work, gearing, materials and more - BikeRadar