[Add Coating For Longer Service Life]: This set of combined wood turning tools adds a coating, which can increase the tool life by more than 60%, making it more durable, save your money. [Durable Tungsten Steel Material]: Made of solid tungsten steel - Provides the best combination of sharpness and durability. It is polished to a mirror finish for smoother cutting and longer tool life. [Suitable For All Levels Of Carpentry Workers]: This is a free combination suit that meets the needs of roughing and finishing cutting. Suitable for both professional and beginners. All the carbide turning inserts cutting tools are supplied with screws. Type: A Colour: Silver Material: Tungsten steel Package Contents: 1 x rhombus carbide insert (10mm x 31.5mm) 1 x rhombus carbide insert (10mm x 28mm) 2 x Square with Square carbide insert (11 x 11mm) 2 x round carbide insert (8.9mm x 1.85mm) 2 x round carbide insert (12mm x 2.5mm) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.