Tungsten Carbide Rotary Burr Set for Dremel, 10PCS Double 8.5*6.5*1.7\nProduct Details\n--\u3010Carbide Burr Set\u3011: These carving bits are made from Tungsten Carbide Steel for long life, sturdy and durable. Shank Diameter: 1/8'' , Total Length:45-50mm, Cutting Diameter: 1/4''. 1/8'' shank fits most small rotary tools with three jaw chuck.\n--\u3010Double Cut Design\u3011: The groove lines of these carving bits\u2019 head are crossed, which makes it more suitable for materials with relatively low density, such as wooden, plastic and aluminum. To maximize cutting and material removal efficiency and effectiveness.\n--\u3010Premium Material\u3011: This carbide burr set/rotary bit set is made of premium tungsten Carbide steel which has long working life, it has extremely high hardness and good toughness, machining hardness reach to HRC70. The carbide burr set cut through extraneous material like a hot knife through butter.\n--\u3010Wide Range Adaptability\u3011: 1/8\u201D shank carbid!