Bits for power drills; Centering drilling bits being parts of machines; Electrical drills; Extensions for power drill bits; Laser welding machines; Power drill bit extensions; Power drill bits; Power drills; Precision machine tools, namely, hard metal tools, high speed steel (HSS) tools, carbide tools, ceramic tools, poly crystalline diamond (PCD) tools, and diamond-coated and diamond-uncoated tools, and hard metal tools, all for use in the cutting and forming of materials by others; Tool bit...