Product Description Material: Carbide Size: 1 65 * 19.05mm, 2 70 * 19.05mm, 3 83 * 19.05mm, 4 97 * 19.05mm Quantity: 4pcs Package Content: 4 * Engraving Machine The main function Trimming, edge treatment & grooving, three-dimensional clearance angle, slotted, perfect for all your trim applications, cuts all composition materials, plywood, hardwood and softwood. PTFE Coating Heat-resistant PTFE coating baking to prevent the accumulation of wood chips, resin and asphalt, Good wear resistance, greatly durable life Anti-reverse design: Solid hardened steel body with anti-reverse and CNC balanced design with high quality guide bearings. Anti-Kickback The blade is sharp and smooth, solid Hardened Steel Bodies with Anti-Kickback Design, suitable for trimming, three-dimensional clearance angle, slotted Scope For Woodworking, Hardwood, Particleboard, MDF, Acrylic; Applicable models: the engraving machine, trimmer