Slice 10524 Utility Blade, Never Rusts, Lasts 11x Longer Than Steel, Finger-Friendly Edge, Cardboard Cutter, For Safety Knife Slice safety blades unique cutting edge might seem dull, but it cuts right through your material while keeping you safe! Slice blades are finger-friendly and safe to the touch. Rounded tip guards against accidental punctures. Other blades are dangerously sharp. Slice blades start at a safe and effective sharpness and stay there 11 times longer. Fits in many third-party utility knives, giving you a safe, effective alternative to steel. Slice ceramic blades never rust, are non-conductive and maintenance free. Perfect for cardboard, rubber flooring, reinforced plastic, vinyl, corrugated plastic, roofing membrane and many other household and workshop materials. Alternate utility blade options from Slice include the 10523 Utility Blade (Serrated Edge) and the 10525 Utility Blade (Pointed Tip).