5 pcs wood carving engraving drill bit for woodworking, carving, drilling Specifications: Material: high speed steel, High hardness, offer superior cutting power and durable.Size: approx. 3 x 3 mm, 3 x 4 mm, 3 x 5 mm, 3 x 6 mm, 3 x 7 mm, 3 x 8 mmQuantity: 5 pcs Package includes: 5pcs milling cutter root carving tools drill bitsAngle Design: Tricuspid centering - accurate centering for sharp and precise countersinking.Flute Type: Three sided arc surface - fast discharge chips from the hole on sides automatically.Whether it is scraping a flat surface during finishing, or making textures from threads, it is excellent. Very versatile.Note: 1. Please allow a little error on the size due to manual measurement.2. The color might exist slightly difference due to different displays.3. Sharp products, please keep away from children.