About This Notice: Be sure to watch our HOW-TO video before using it. It can help you slide the utility blade out quickly and easily Super Versatility: It is made entirely according to standard utility knife blades and fits most standard & fixed utility knives perfectly Affordable: Includes 100-pack replacement blades and they come in a well-built case for safe storage and disposal. Each blade is rigorously tested and we firmly believe this is a great deal Durability: WORKPRO utility knife blades are made from SK5 steel, which is of high quality and durability Sharp: The knife blades are highly sharp and cut through lots of materials easily and without hesitation. Ideal for cutting cardboard, leather, linoleum, rope, soft metal, etc Overview Material : SK5 Steel, Plastic Brand : WORKPRO Color : Silver Item Length : 3.13 Inches Handle Material : Plastic Blade Material : Alloy Steel Item Weight : 400 Grams Blade Length : 61.5 Millimeters Style : 100 Pack Manufacturer : HANGZHOU GREATSTAR INDUSTRIAL CO.LTD