Sram x01 xg1195 11 speed mtb cassetteboasting a range of 10 to 42 teeth the 11 speed x dome gives you total freedom while keeping the steps even and combined with the xd driver body it connects to the wheel like nothing before unique finish for high durability11 speeds 10 12 14 16 18 21 24 28 32 36 42xd driver body creates more stable hub connectionoptimized gear steps across entyre rangespecificationstechnology highlight x domeweight 275gmaterial 4130 chromoly steel cog cluster