A SAFE UTILITY KNIFE: This box opener's blade is made of 100% zirconium oxide and safeguards against injury with its proprietary finger-friendly edge. It also has a smart retracting blade that instantly self-retracts when it loses contact with its cutting surface. AN EFFECTIVE CERAMIC BOX CUTTER: This safety box cutter is just as effective as a traditional box cutter due to the blade's durability and design. Additionally, our ceramic utility blade never rusts and lasts 11x longer than metal package openers. DESIGNED FOR EASE: This package cutter has a durable, reinforced nylon handle for stability and precision, which makes slicing a breeze. It also has a longer blade for thicker and more effective cuts and is suitable for use in either the left or right hand. PERFECT FOR ANY MATERIAL: This ceramic utility blade is not only great for cutting through cardboard and breaking down boxes; it is also perfect for cutting a variety of materials including tape, banding, plastic wrap, cardstock, and vinyl. TESTED AND TRUSTED: Slice remains the first choice for safety and effectiveness in industrial settings and is now recognized as the leading box-opening tool in homes.