Single edge plastic razor blades enable the professional to safely clean and remove Decals, Pin-Striping, Paint Dirt, Tar, Sap and Other Debris from Delicate Surfaces, Including Coated & Tinted Glass. Each razor blade is constructed of durable scratch resistant plastic and features a strong edge. Use on painted automotive surfaces, plastic coated or tinted windows, fabrics, finished woods, and many other delicate surfaces and materials.