【1】Craft Knife with Extra Blades: Package including 4pcs art knife is the standard #11 size and comes loaded with a new blade plus 40 more are supplied in four safe storage box. Bright colors (yellow, blue, purple, sliver) makes it easy to find and the tip of the craft knife is sharp. 【2】Premium Quality: The Aluminum alloy construction is lightweight and robust, ensuring durability even under the pressure of intricate cuts. The handle is ergonomically designed, providing a comfortable grip for extended use. The overall design lends itself well to precision, allowing for controlled and detailed work. 【3】Safely & Portable: 4 Hobby knives each with a safety cap of burin can avoid unnecessary cuts, craft knife cap to prevent scratches. The compact size of exacto knife 4 pack also makes it easy to store in our crafting toolbox or carry with us for on-the-go projects. 【4】Instant Blade Replacement: The blades are very easy to change. We rotate the collar around the blade to loosen the blade, pull the blade out of the handle, insert a new blade in the handle, and tighten the collar around the blade and we're done. 【5】Multi-Purpose Use: Craft knife kit perfect for cutting, carving and trimming, such as cutting thin wood, scrapbooking supplies, cardboard, wallpaper, plastic, cloth, leather and foam board craft, meet our different needs. Great set of exacto blades for hobbiests to proceed all kinds of hobby and craft work.