Heavy Duty Self Loading Cutter w/ Grip + 2 Replacement Blades. Rubberized grip for handling comfort. Steel top for safety guide. Steel track for strength and durability. Furnished with two 18mm seven snap-off points each, loaded into the self-load handle. Spare blades automatically load when current blade is exhausted. Slider mechanism has audible click-stop and adjustable self-locks for greater blade security. 17-position slide exposes variable blade length. Compatible with 18mm Snap-Off replacement blade (BAZIC 142).