1These burrs are made of high speed steel ,high hardness,high abrasion resistance and high heat resistance 2Total 20 pieces single cut burrs in various shapes and sizes that you can use for many purposes 31/8 inch round shank would fit many electric powered or pneumatic powered tools and machine tools 4Suitable for wood /plastic or other soft material 5Widely used for carving, shaping and for the removal of sharp edges or corners, burrs and excess materialFeatures: _x000D_These burrs are made of high speed steel, high hardness, high abrasion resistance and high heat resistance. _x000D_Total 20 pieces single cut burrs in various shapes and sizes that you can use for many purposes. _x000D_1/8 inch round shank would fit many electric powered or pneumatic powered tools and machine tools. _x000D__x000D_Suitable for wood /plastic or other soft material. _x000D_Widely used for carving, shaping and for the removal of sharp edges or corners, burrs and excess material. _x000D_Titanium coating on the surface of the burrs, provided with beautiful appearance. _x000D_ _x000D_Specifications: _x000D_Material: high speed steel, Titanium Coating _x000D_Shank diameter: 1/8inch (3.11mm) _x000D_Length: 39 mm/1.53inch _x000D_Quantity: 20 PCS _x000D_ _x000D_Package Included: _x000D_20 x Rotary Burrs _x000D_ _x000D_ _x000D_