[Wide range of application]The diameter of the burr set is 6mm, which is suitable for engraving, carving, chamfering, hollowing, slotting and reaming of soft materials such as wood and plastic. [High Quality Material]The router metal drill bits is made of 34# steel with black finish. This makes the mini cutter strong and durable and of high quality for processing wood. [Universal handle]Wood milling cutting burs 6mm handle is faster and easier than manual. It is easy to control, easy to use, safe and reliable, can reduce labor intensity and improve working environment. [Tips]There may be a reddish substance on the surface of the steel drill bits burr group. Does not rust, does not affect the use. You can wipe it off with paper. Features: Material: 45#steel Head length: 11 mm/22 mm/24 mm/30 mm. Total length: 48 mm/58 mm. Handle diameter: 6.3 mm. Head shape: round, cylindrical, conical Colour: black. Package contents: 10 x milling drill bits.