18MM SK5 BLADE: Durable, sharp and retracting smoothly. Snap-off design keeps the blade always sharp and ready to go!AUTO-CHANGE MECHANISM: Change blade automatically. Simply push the button to top, pull off the used blade, then push the button back to bottom, then push up, the blade will be self-reloaded.ANTI-SLIP HANDLE：Soft TPR material and ergonomic design provides comfortable grip, reduce fatigue from long-time working.STORAGE MECHANISM: Built in with a blade cartridge which can store 3 blades. It means every knife contain with 3 pcs blades inside, 1 equals 3. Super convenient and economic.WIDELY USED：Cutting boxes, tape, drywall, leather, cardboard, rubber, kevlar, linoleum,etc. Perfect for daily use, handcraft tasks. Keep one at home, office, school,garage, warehouse, anywhere you need it.
