Making high-precision cuts, tool employs full-stop system that prevents cutting wheel and roller collision after cutting, maintaining wheel sharpness. Built-in machinist on 1 3/8 in. and 1 3/4 in. models spins independently of cutter and is easy to replace. Ratchet style quick release and close system makes 2 5/8 in. model suited for PVC pipe and plastic tubing. True tracking is achieved via 4-roller system which holds pipe at 4 points, enabling accuracy without any walking. Spare wheel attaches to bottom with screwdriver. Miniature models are available.