About This Double-cut tungsten carbide bits 3mm shank compatible with Dremel 1/8"(3.175mm) 10 Pcs, 2 brass collets, 1 durable plastic clamshell case, 1 manual and 1 paper box. 5 years returnless replacement. Ultra-sharp, well-balanced design removes material faster. Perfect for detail work in tight spaces. For heavy removal, please use our larger shank burrs and 500W+ rotary tools. Compatible with Dremel, Milwaukee, etc. Not recommended for low-speed drills. High speed rotary tools are optimal, let the speed do the work. Versatile: carving, chamfering, cleaning, contouring, cutting, deburring, elongating, engraving, grinding, meatalworking, milling, polishing, porting, sculpting, shaping, shaving, tooling, trimming, metal, wood, stone, steel, plastic, etc. Always wear ear, eye, face protection and safety gloves. Grip the rotary tool firmly with both hands and use a swinging motion to minimizes the risk of kickback or wobble or sudden movement. Overview Material : Tungsten Carbide Cutting Diameter : 6 Millimeters Finish Type : Uncoated/Lightly Lubricated Shank Type : Straight Cylindrical Cutting Angle String : 15 Degrees