Core drilling bits; Drill bits for rock drilling; Pads for floor polishing machines; Wire wheels for power-operated grinders; Power drill bit extensions; 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; Polishing system for use in single-head machines comprising gr...