Rotary BurrThe rotary rasp set main supporting the use of electric tool or the pneumatic too. includes 5 pieces single cut burrs in various shapes that you can use for many purposes. High QulaityMade up of premium high speed steel for high hardness, high abrasion resistance and high heat resistance, 1/4" shank size is suitable for most electric & cordless drills. File SmoothlyHigh processing quality, file smoothly, can process out various shapes of mold cavity. Long life, easy and simple to use, safe and reliable. Widely UseThis set of rotary burrs could be used on aluminum and iron materials.Widely used for carving, shaping and for the removal of sharp edges or corners, burrs and excess material. Specifications: Material: High speed steel 4241 Color: As Picture Shown Hex Shank Size: 6.35mm(1/4") Other Size: As Picture Shown Quantity: 5pcs Weight: Approx. 150g Package Includes: 5 * Burrs (cordless drill is NOT included)