Use this kit to convert THE ORIGINAL ZTR/3.30/3.30Ti and Singlespeed rear hub to 10 x 135 Thru. NOTE: THE ORIGINAL HUB HAS THREADED END CAPS ON BOTH SIDES. This kit is not compatible with the Type II axle. Type II Axle does not use thread on the left side end cap. This kit will not work with 3.30HD Rear hub.