Material: Tungsten carbide,high speed steel,wear-resistant & durable. Shank: 1/8 inch(3mm),Length:8/5 inch(40mm). The Carbide Rotary Files can work with most small rotary tools (like Dremel tool),perfect for processing all kinds of materials such as wood, plastic,foam or resin models 20 different tools, include: rotary burrs, grinding head and rotary burr cutting tools etc,meet most of your drilling needs,suitable for engraving, beveling, chamfering, grooving, reaming, hollow. Speed is generally 6000-50000 rev / min,long service life, reduce the inefficiency turnover,stay sharp longer than the cheap, lower quality burs.
