Sram pg1030 10 speed mtb cassettethe pg 1030 cassette offers an innovative approach to 10 speed cassette design our cassette performance is optimized by material choice tooth profile and shift ramp design for quick and positive index shifting powerglide chainring starting out with raw 7075 t6 alloy plate we stamp coin and cnc the rings to create a precise shifting whole coining shapes tooth profiles into designs cnc alone cant match creating a stronger tooth by strain hardening the al