Steel Top Multipurpose Cutter. Contoured grip for handling comfort. Steel top for safety guide. Removable blade snapper included in cap of knife. Furnished with one 18mm utility knife blade with seven snap-off points. 13-position slide exposes variable blade length. Compatible with 18mm- Snap-Off Replacement blade (BAZIC 142). Slider mechanism has audible “click-stop” and adjustable self-locks for greater blade security. Pull blade clamp to lock blade firmly into position.