Features:* .* 8mm shank reaming drill bit woodworking drill bit pilot hole drilling for screw hole drill bit * Sharp tungsten steel, fast drilling, smoother cutting * Preferred alloy material, fully ground cutting head, sharp, wear-resistant, no burrs.* Centerless grinding technology, smooth shank and high precisionSpecifications:* Shank Type: Round Shank * Cooling Type: External Cooling* Cutting Diameter: 8/10mm (Approx.) * Shank Diameter: 8mm (Approx.) * Groove Length: 10mm (Approx.) * Useful Length: 10mm (Approx.) * Overall Length: 55mm (Approx.) * Outer Blade Top Angle: 90° * Material: Hard Alloy * Maximum Cutting Depth: 10mm (Approx.) * Optional Model: Phi; 2.8*8mm, Phi; 3.0*8mm, Phi; 3.2*8mm, Phi; 3.5*8mm, Phi; 3*10mm, Phi; 4*10mm, Phi; 5*10mm* Applications: suitable for countersinking wood, high precision drilling, smooth and fast surface conversion, easy to usePackage Contents:1*Bit Reaming Bit Notes:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.