35 On-line retail store services featuring cylinders for gas and components for use with such cylinders, namely, receptacles, valves, regulators, brackets, filters, manifolds, pressure relief devices, fuel lines, fittings, hoses, gauges, wiring harnesses and high-pressure fuel systems; Retail stores featuring cylinders for gas and components for use with such cylinders, namely, receptacles, valves, regulators, brackets, filters, manifolds, pressure relief devices, fuel lines, fittings, hoses, gauges, wiring harnesses and high-pressure fuel systems