Bolts of metal; Fasteners, namely, metal bars and chains; Fittings of metal for compressed air hoses; Fittings of metal for windows; Mechanical fastening elements of metal; Metal drains for use in construction of basement waterproofing systems; Metal hardware, namely, springs; Metal keys for locks; Metal profiles made of steel, iron, nickel, titanium and other metals and their alloys; Screws of metal