Features:Brand new and high quality.10pcs of higher quality of rotary file set for rotary tools.Material: High Speed Steel 4241.Shank: 3mm(diameter).Color:as the picture.Application:For processing of metallic and Non-metallic surfaces using an engraving machine or mini-Drill various forms of cutting part provide efficient processing of materials length is about 40mm，Shank Diameter is 3mm.Note:Due to lighting effects， monitor's brightness ， contrast settings etc， there could be some slight differences in the color tone of the pictures and the actual item.Package Included:1 set x different sizes router bits(10pcs/set)NO Retail Box. Packed Safely in Bubble Bag.