[B]X-CEL Means Speed Many of our most popular tubing cutters now include several X-CEL features to make your job quicker and easier. X-CEL Knob-cut tubing more quickly and easily with our larger, more ergonomic designs X-CEL Wheel Pin- change your cutter wheel quickly using our new ball detente design, no tool needed, no lost clips! Spare cutter wheels included for maximum up time. [B] [B]Enclosed Feed Tubing Cutters with New X-CEL Features:[B] Telescoping feed screw design keeps the cutter at the same length regardless of tubing diameter- good for tight spaces Enclosed feed screw to eliminate clogging and jamming Grooved rollers for close-to-flare cuts Foldaway reamer Now includes X-CEL Knob and X-CEL Pin for quicker cutting and wheel replacement Made from high-strength zinc alloy Spare cutter wheel included in the knob Cut hard/soft copper, aluminum, brass and multilayer tubes.