Earth drilling machines and parts and accessories therefor, namely, rock drills, drill pipe, drill tubing, drill rod shank adapter, overshot assemblies, [ reamers, ] water swivels for earth drilling equipment, hoisting plugs, [ casings, ] casing cutter, casing shoes, [ casing bits, ] taps for drill rods, [ casings, and ] outer tubes, adapters for drill rods, water swivels, [ hoisting plugs, casings and recovery tools, deflection wedges, ] conversion kits for core barrels and overshot assemblies, wireline loading chambers [, pneumatic feedleg for rock drills ]