Keeps the shifting smooth and easy on pavement or singletrack SRAM PowerGlide II 8 speed cassettes give you reliable performance, day in and day out. The race-proven design and durable, chrome-plated finish help ensure years of hassle-free performance. Recommended Chain: PC-38. Lock Ring: Steel. Finish: Chrome Plated. Technology: PowerGlide II. Gear Ratio: 11-30. Speed:8. Weight: 330g (11-30). Material: Steel.