[High Quality]The carbide set is made from tungsten carbide steel with high precision shape, which is high finish and has long working life. [Double Cut]The die grinder bits are designed to double crossed lines to be suitable for low density material such as platics, and aluminum. Besides, double cut design can reduce the size of the and slivers that makes your work more efficient. [Universal] 1/8inch diameter of the tool bits, are compatible with most of such as Die Grinders Air Tools and so on. No wear out in long time use and will not bend even at high speed [Compatibility]The carving drill bit set not only can work on metal like iron, steel, steel, high carbon steel, chromium alloy, , brass and other metals, also on non-metal like tile, , stone, . Out set will be a great choices for your DIY arts and crafts. [Wide Application]The carbide set includes assortment style 20 pcs that satisfy your different work needs, such as sculpturing, carving, deburring, cutting, chamfering, polishing, milling, welding, metal & non-metal processing engraving, etc. Sharp file makes the wood or metal any shape . Colour:silver Material:Tungsten steel Package Contents: 20 x carbide Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.