SKmoon (TM) Plastic M3 Nylon Screw Hex Spacers Screw Nut Stand-off Accessorie (Full Size, black) Nylon Hex Spacers/ Screws/ Nuts Assorted Kit. Total 120 pieces, complete specification and types, with reliable quality. Application in electronics, computers, PC board, DIY hobby etc. to replace the screw fasteners. Come with a plastic box .