The Ridgid 66737 Constant Swing Tube Cutter features an enclosed feed screw to eliminate clogging and jamming It also has grooved rollers for close-to-flare cuts, and a fold-away reamer. It has an X-CEL Knob that cuts tubing more quickly and easily with the larger, more ergonomic design. Whilst the X-CEL Wheel Pin helps to change your cutter wheel quickly using the new ball detent design, with no tool needed and no lost clips. It is made from high-strength zinc alloy and there is a spare cutter wheel included in the knob. It cuts copper, brass, and aluminium tubing and thin-wall conduit. Features: Features an enclosed feed screw to eliminate clogging and jamming, grooved rollers for close-to-flare cuts, and a fold-away reamer X-CEL Knob cuts tubing more quickly and easily with our larger, more ergonomic designs X-CEL Wheel Pin - changes your cutter wheel quickly using a new ball detent design…no tool needed…no lost clips! Spare cutter wheel included in the knob Cuts copper, brass, and aluminum tubing and thin-wall conduit Specification: Capacity: 3-35mm (1/8 - 1.3/8in)