EZAR Auto Retractable Safety Cutter One safe & easy tool for your cutting needs Auto-retracting blade to prevent product damage & personal injury Ambidextrous 3 button blade activation Ergonomic handle. Tape splitter. Spare blade storage compartment Spare Blades - SP-017 Spare Blades Dispenser - SPD-17 Top Cut: Extend blade and pull across top corner of box for a perfect top cut Plastic Straps: Always cut at a 45 degree angle for maximum productivity Tape Cut: Poke splitter into tape and pull. DO NOT use blades to cut tape. Protects the contents of the box