About maintenance: 1. Keep the knives clean, remove resin, sawdust, etc. from the wood after use, and use standard industrial solvents to clean the knives. 2. Apply a small amount of oil on the surface to prevent the surface from rusting. 3. Do not re-sharpen the tool and change the shape of the tool alone, otherwise it will easily cause the cutting edge to break and cause an accident.Specification: Type: One Flute Milling Cutter for Aluminium; Grade: AAA; Best Suitable Materials: Acrylic, Compression, MDF, Aluminum Shank diameter:3.175/4//5/6/8mm Blade diammeter:1/1.5/2/2.5/3.175/4/5/6/8mm Total length: 45mm,50mm,55mm,60mm,70mm Material: Tungsten steel Features: This set of carbide Milling Cutter is perfect replacements for your CNC machinery, make you enjoy a precise, easy cutting experience. Made of Tungsten steel high construction tools Application: Cutting aluminum plate, aluminum alloy, aluminum profile, aluminum composite plate Safety instructions: 1.The bladed product is not use for people under 18 years. 2. The item is only use for industrial cutting not hazardous article. Best Suitable Materials: Acrylic, Compression, MDF, Aluminum Package include: Single independent package*10