Product This product contains 50 pieces M12 zinc-plated carbon steel rivet nut. Rivet nuts make it easy to insert into parts and install on many types of materials including steel, plastic and fiberglass. Threaded rivet nut a great installation tool to make your job easier and faster. < p>Specifications Material: Zinc plated carbon steel Type: M12 (18mm x 22mm) Sturdy and DurableThread Rivet Nut Metric flat plates are made of high quality zinc plated carbon steel. Threaded insert nuts have superior rust resistance, which can ensure long-term use. Deep ThreadThreaded insert nut assortment is with deep thread inside, which are effective in fixing and non-slip. Threaded rivets make it easier to insert into the workpiece. Excellent Installation ToolsExcellent threaded nut insert installation tools to make your work easier and faster. Size and Quantity50pcs zinc plated carbon steel rivet nuts, M12, 18mm x 22mm. Widely UsedRivet nuts M12 threaded inserts can be easily installed in many types of materials different materials, including steel, plastic and fiberglass.