[High Quality Material]Our milling are made of high hardness wear-resistant tungsten steel, which is sharper and less breakable than ordinary carbide drill bits.[Efficient Cutting Performance]These mirror engraving bits are designed with scientific chip flutes to prevent wood from affecting your work. The cutting speed is fast, and the cutting surface is flat and smooth.[Individual Packaging]4pcs per pack, each individually packed. Includes 1 15 detail drill, 1 20 profile drill, 60 and 90 V-groove drills.[Wide Application]These milling are suitable for MDF, PVC, acrylic, solid wood, plywood, organic board, etc. Widely used for cuttingengravingengravinggroovingdrillingmilling.Colour: silverMaterial: tungsten steelPackage Contents:4 * BitsOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +- 1-3cm.