TOP BLADE Box Cutters USE FOR: Construction, woodworking, crafts, farming, fishing, camping, and hunting. Ideal for cutting cardboard, plastic leather carpet, rope, etc. PACKAGE CONTAINS: Set of 5 Adjustable thumb blade lock. Adjustable blades snap-off, ensuring sharp cutting edges. Best Economy Box Cutter Utility Knife: Heavy Duty Utility Knife comes with a Snap off, Built-In Snapper End Cap for Easy Blade Renewal. Long Blade is Scored to Snap Off at Intervals to Reset the Blade to the Next Sharp Section 15 points for long lifetime and sharpness Easy to carry around in Pocket, Belt Pouch, Tool Kit, Shirt Pocket. light weight. IDEAL FOR MANY CUTS - Use for precise applications like paper, tape, plastic, cardboard, balsa, bass wood, photos, coupons, cardstock, mat board, foam board, delicate fabrics, crafts, amazon, ups or post office packages. EXTENDED USE AND SAFETY LOCK FEATURES- Prevent blade slipping with the safety lock tab. Always keep your blade fresh and sharp by snapping off the blade for a new sharp cutting tip.