Slice®'s longest blade yet cuts through foam and fiberglass insulation like butter, without sacrificing user safety. This finger-friendly® blade is much safer to touch than traditional blades and cuts effectively when installed in industrial knives designed by Slice. This 100% zirconium oxide safety blade is non-conductive, chemically inert, and never rusts. And, like all Slice blades, it lasts up to 11 times longer than comparable steel blades. This model features rounded tips for added safety. Comes in a pack of four blades. Reduce injuries and lower costs with Slice safety blades.