DOWELL Retractable Knife Box Cutter, Self-Loading, Heavy Duty, Quick Change, Extra Blades (3 Piece) TPR + PP Handle, Cardboard Boxes or DIY

• SK5 18MM LAMINA: Durable, sharp and smooth retraction. Snap-on design keeps the blade always sharp and ready to go!
• AUTOMATIC CHANGE MECHANISM: Change the blade automatically. Just press the button up, pull the used blade, then press the button back down, then push up, the blade reloads automatically.
• ANTI-SLIP HANDLE: Soft TPR material and ergonomic design provide a comfortable grip and reduce fatigue from long time work.
• STORAGE MECHANISM: Integrated with a blade cartridge that can hold 3 blades. It means that each knife contains 3 blades inside, 1 equals 3. Very convenient and economical.
• WIDELY USED: For cutting boxes, tape, drywall, leather, cardboard, rubber, Kevlar, linoleum, etc.Perfect for daily use, craft tasks. Keep one at home, office, school, garage, warehouse, anywhere you need it.