[Size information]The shank length of the Single cut rotary files is about 38 mm/ 1.49inch, and the cutting diameter is 1/4 inch, the diameter of the shank is 1/8 inch; Please confirm whether the size meets your needs before purchasing in case of unfit situation.[Premiun Material]The engraving drill bits made from High-quality Cemented carbide, sturdy and durable, which is strong and durable, with pointed surface particles and fine polishing. Suitable for wood, iron, carbon steel, alloy steel, stainless steel, copper, aluminum, and other metals, and marble, wood and Plaster etc.[Percision & Efficiency]Carving bits have 3mm for detailed work and 6mm for quick material moving. Using these drill accessories can quickly and effectively remove residues, with the characteristics of rapid cutting and polishing, they can help to improve the efficiency of your work.[Suitable for most Angle Grinders]These Rotary Burr Set with 1/8inch Shank and 1/4inch Head are compatible with for Dremel and most rotary tools. Can be applied for cutting, shaping, grinding, polishing and burr removal, etc., can be your good partner for wood working and greatly meet your various requirements.[Easy to Use]Grinder drill is must-have kit for woodworkers and enthusiasts, they need to clean the welds frequently or use metal for cleaning,easy to grasp and use, safe and reliable.Colour: silverMaterial: carbideSize: 3 x 3mm/3 x 6mmPackage Contents:20 x Carbide Burrs ToolOnly the above package content, other products are not included.Note: Light shooting 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.