XW Auto-Retractable Safety Utility Knife, Box Cutter of Quick Blade Change, 4 Spare Blades Storage in Handle

• COMFORTABLE: Heavy duty zinc-alloy with anti-slip TPR grip handle is designed for excellent control and durability.
• SELF-RETRACTING: Blade extends by pushing the slider and retracts automatically when releasing the slider. 
• QUICK CHANGE: Slide the black plastic sleeve out of the knife to remove the dull blade, and insert a new one.
• REPLACEMENT BLADE: Blade storage design for quick access.
• WIDELY USED: Can be used for office, household, workshop and warehouse.

XW Auto-Retractable Safety Utility Knife, Box Cutter of Quick Blade Change design, 4 Spare Blades Storage in Handle，Self retracting safety knife with heavy duty zinc alloy housing and blade storage