OLFA Snap It N' Trap It utility knife lets you dispose of dull blades in a snap! Convenient detachable blade snapper/disposal container holds 16 blade segments. Remove dull blade edges easily and safely. Simply slide the blade disposal container off the knife, insert the dull blade into the end of the container and snap it off. The old blade disappears into the container, and a sharp new blade is ready for use. Features heavy-duty stainless steel blade channel that holds blade tight, auto slide that locks securely with one hand, and forever guaranteed handle. Perfect snap blade knife for cutting all types of material including gator board, foam core, corrugated plastic, and expanded PVC. Also cuts flooring, drywall, roofing shingles, carpeting, linoleum, and more. Uses 18mm OLFA LB and LBB blades (shown at right).