Description: 5pcs 3.175mm Shank 0.1mm 15\/20\/30\/45\/60 Degree Tungsten Steel Engraving Bits CNC Tool Specification: Material Tungsten Steel Shank diameter 3.175mm Degree 15 \/20 \/30 \/45 \/60 Size 0.1mm Length 36mm Quantity 5pcs Features: Suitable for engraving hardwood, density board, acrylic, PVC, metal, marble, jade, etc. High precision and concentricity. Durable and long service life. Package Included: 5 x Engraving Bits More Details: