[] Our milling bits are made of high hardness wear-resistant tungsten steel, which is sharper and more durable than ordinary carbide drill bits. [Efficient Cutting Performance] These mirror engraving bits feature scientifically designed chip flutes to prevent material buildup and ensure smooth operation. They offer fast cutting speed and produce a flat, smooth surface finish. [Individual Packaging] Pack of 4 pieces, each individually packaged. Includes: 1 x 1.5mm detail drill, 1 x 2.0mm profile drill, 60° and 90° V-groove drills. [Wide Application] Suitable for use on MDF, PVC, acrylic, solid wood, plywood, and organic boards. Ideal for cutting, engraving, grooving, drilling, and milling tasks. Color: Silver Material: Tungsten Steel Package Contents: 4 x Bits Note: The package includes only the items listed above. Other products are not included. Note: Due to lighting and display differences, the item color may vary slightly from the images. Measurement allows an error of +/- 1-3 cm.