Description:3.175mm Shank 30 Degree 0.4mm Carbide Engraving Bits Double edged Straight Flute for WoodworkingSpecification:          Material       cemented carbide           Shank diameter       3.175mm           Degree       30            Size of  cutter tip       0.4mm           Length       38mm           Quantity       1pcs   Features: Suitable for woodworking. High efficiency and the groove is easy for chips to remove. High intensity and high rigidity. Durable and long service life.  Package Included:1 x Engraving Bits More Details: