Hydraulic hose plug and cap assortment used to ensure secure and leak-proof connections of hose and tube system maintenance; Kit consisting of steel plugs and caps in the nature of adapter fittings for industrial equipment; Metal pipe fittings; Metal hose fittings; Metal joinery fittings; Metal plug; Metal tubes and pipes; Metal tube, pipe, and hose fittings, couplings and connectors, for use in hydraulic systems, namely, plugs, seals, o-rings, flanges, swivels, swivel adapters, swivel ends, connections, sleeves, caps, reducers, unions, flares, nuts, and ferrules; Metal nuts for industrial, commercial, or household use, namely, flare nuts, inverted flare nuts, JIC tube nuts, o-ring face seal nuts, metric hex nuts, and flareless nuts; Metal braze-on fittings not being parts of bicycles, namely, metal fittings brazed onto tubing; Metal fittings and adapters used in the connection of components of hydraulic systems, equipment and machinery