Brand SRAM Item type Cassette Item name PG-1170 Series name Force Speed 11 speed Ratio 11-12-13-14-15-16-17-19-22-25-28 Teeth 11-28T Lock ring material 7000 series aluminium Sprocket material Heat treated steel cogs, aluminium spider Technology Power Glide Body SRAM/Shimano 11 speed only Group Force 22 Group comp - SRAM Red 22, Force 22, Rival 22