Mini word punching artifact special countersink drill bit for advertising word. Luminous base plate screw hole step drill bit. drill

Brand JBWTL/King Bawang Tool holder type . Cooling type (internal cooling/external cooling) . Cutting diameter (mm) . Diameter of handle (mm) 4 Length of chip pocket (mm) . Useful length (mm) . Total length (mm) . Outer edge angle (°)