[B]X-CEL Means Speed[B] 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 detent design, no tool needed, no lost clips! Spare cutter wheels included for maximum uptime. [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 Fold-away 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.