This workhorse cutter is preferred and used in many applications by plumbers, HVAC technicians, auto mechanics, electricians and DIYers. It's specially designed to fit into tight spaces on larger diameter tubing. The oversized, knurled knob and stainless-steel rollers help make tightening easy. The proprietary SXT™ heat-treated alloy steel cutter wheel cuts smoothly and is easily replaced. Durable epoxy powder-coated finish for long life. Replacement wheel available