Features: _x000D_ These burrs are made of high speed steel for high hardness, high abrasion resistance and high heat resistance._x000D_ _x000D_ There are total 5 pieces single cut burrs in various shapes that you can use for many purposes. _x000D_ 1/4 inch hex shank would fit many electric powered or pneumatic powered tools and machine tools._x000D_ _x000D_ This set of rotary burrs could be used on aluminum and iron materials._x000D_ _x000D_ Widely used for carving, shaping and for the removal of sharp edges or corners, burrs and excess material. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material: High speed steel 4241 _x000D_ Color: As Picture Shown _x000D_ Hex Shank Size: 6.35mm(1/4") _x000D_ Other Size: As Picture Shown _x000D_ Quantity: 5pcs _x000D_ Weight: Approx. 150g _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 5 * Burrs (cordless drill is NOT included) 1These burrs are made of high speed steel for high hardness, high abrasion resistance and high heat resistance 2There are total 5 pieces single cut burrs in various shapes that you can use for many purposes 31/4 inch hex shank would fit many electric powered or pneumatic powered tools and machine tools 4This set of rotary burrs could be used on aluminum and iron materials 5Widely used for carving, shaping and for the removal of sharp edges or corners, burrs and excess material