Features 115degree 2flute engraving bit, perfect for engraving and carving details. 2Made of premium tungsten steel material, has high hardness and strength, resistant to corrosion and rust. 3Unique mirror friction treatment for perfect surface effect, at the same time can reduce the chance of burning and deviation. 4Ideal for carving and marking words on wood, MDF, aluminum, and acrylic. 5Wide application, suitable for spring engraving tools, CNC milling machines, end mills, etc. Specification Item Type: Engraving Bit Material: Tungsten Steel Color: Silver+Blue Coated Specification: 4 x 0.5 x 15 Tip: Approx. 0.5mm/0.02in Shank Diameter: Approx. 4mm/0.16in Total Length: Approx. 45-50mm/1.8-2.0in Purpose: Used for Embossing / Carving / Trepanning Application: Suitable for Spring Carving Tools, CNC Milling Machines, End Mills, Etc. Package List 5 x Engraving Bit