Strong Hand Pipe Alignment Clamps with Quick Screw Action Cordless Power Tools determined by four key factors: determined by four key factors: 415 Pieces Replacement Packs Available: Part # Size Pack Qty C1720 1 6G x 3 8 40 C1720 2 6G x 1 2 30 C1720 3 6G x 3 4 30 C1720 4 8G x 3 8 30 C1720 5 8G x 1 2 40 C1720 6 8G x 3 4 30 C1720 7 8G x 1 30 C1720 8 8G x 1 1 2 25 C1720 9 10G x 1 2 40 C1720 10 10G x 3 4 30 C1720 11 10G x 1 25 C1720 12 10G x 1 1 2 20 C1720 13 10G x 2 15 C1720 14 12G x 1 30 Capacity : 50 152mm diameter pipeThis new pipe alignment clamp with quick acting screw is a fast accurate fit up clamp with a rugged frame for use in the workshop or on the job site Available in 2 sizes to assist butt welding of 2 pipes up to 305mm diameter