Quickly converts your RIDGID(R) 300 Threaded to a production roll groove Mounts/Dismounts Easily on Standard Model 300 Capacity: 1" through 12" Pipe (25-305mm) MODEL 1041 SPECIFICATIONS Capacity: 1" through 8" Schedule 40 (6mm) 1" through 12" Schedule10 (5mm) 2" through 8" Copper Tubing K, L, M, and DWV Maximum Pressure at Roller: 8,000 psi Shipping Weight: 94 lbs. (42.6 kg) Interchangeable Rollers: TOP PIPE DIAMETER/BOTTOM PIPE DIAMETER 1" through 6" (25-152 mm)/ 1" through 1 1/2" (25-38mm) 8" through 12" (203-305mm)/ 2" through 6" (51-152mm)