Description:Forged by the choice material, so this engraving bit set has better abrasion resistance and higher strength, it is the exclusive tool for high-hardness high-speed cutting applications.Adopting the exquisite workmanship, this engraving bit set can supply good sharpness and fast cutting speed for you. With the design of round shank, each engraving bit of this set can be used with most carving machines with features of impact-resistant and tighter clamping.Tungsten steel is the main material used to make these engraving bits, which have good sturdiness.27mm is the approximate length of each engraving bit and 3.175mm is the diameter of their shank.This engraving bit set is applicable for CNC cutting machines, milling machines to have carving works of acrylic board, plastic board and so on.Item Name: 3-flat Milling CutterMaterial: Tungsten SteelShank Type: Round ShankBlade: 3 BladesFeatures: Fast Cutting Speed, Flat Bottom, Round ShankCutting Angle: 20-degree, 30-degree, 45-degree, 60-degree, 90-degreeSize Details: Length: 27mm/1.06" (Approx.)Shank Diameter: 3.175mm/0.13" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:10 x Engraving Bits (20-degree x 2, 30-degree x 2, 45-degree x 2, 60-degree x 2, 90-degree x 2)