[DOUBLE-CUT DESIGN]Manufactured with cuts made on the left and right spirals, this design produces a finer finish on material and Processing good on Wood, Steel,Carbon Steel , Stainless Steel,Cast Iron, copper, marble, Ceramics and other non-metal [WIDELY APPLICATION]Used for deburring, finishing, shaping and enlarging holes, removing welds, cleaning and smoothing castings. Widely used for wood metal drilling,engraving,carving Very , aggressive, tough, well-balanced and , perfect for tight spaces than grinding discs flap wheel. [Comfortable, ease of control]working with reduced vibrations and less noise. Very clean cut with minimal effort. Colour:Black&Silver Material:Plastic + Steel Package Contents: 1 x 1/4 Carbide Burr Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.