Designed with an enclosed feed screw to eliminate clogging and jamming, grooved rollers for close-to-flare cuts, and a fold-away reamer Features a larger, more ergonomic X-CEL knob that provides a firmer grip so you can cut tubing quickly and easily Innovative X-CEL ball detent wheel pin allows quick, tool-free cutter wheel changes in seconds, with no lost clips Tube cutter is made from high-strength zinc alloy and includes a spare cutter wheel in the knob Cuts copper, brass, and aluminum tubing and thin-wall conduit from 1/8 inch to 1-1/8 inch (3 mm to 28 mm)