Safety Lock-Back Design: The utility knife has the lock-back design, which safely locks the blade when fully unfolding or folding and the blade is tightly fixed without any movement when in use. Interchangeable blades: This folding knife comes complete with 5 spare blades. It has a simple press button for quick blade change & is ideal for cutting cardboard, paper, linoleum etc. Easy to Carry: This utility box cutter is lightweight and fits perfectly in your pocket when fully folded. This retractable pocket knife also comes with stainless steel belt clip and hanging buckle hook for easy carry. This folding utility knife is a practical gadget for daily use, also a great companion for outdoor, traveling.