【Sturdy and Durable】: Metric flat threaded rivet nuts are made of high quality 304 stainless steel. They have superior rust resistance, which can ensure a long time of use. 【Deep Thread】: These rivet nuts are knurled with deep thread inside, which are effective in fixing and anti-slip. The knurled nut makes it easy to insert into the workpiece. 【Excellent Installation Tools】: Excellent rivet nut installation tools to make the work easier and faster. 【Size and Quantity】: Type: M6; Package Quantity: 100pcs. 【Widely Used】: The rivet nuts can be easily installed in many types of materials, including steel, plastic and fiberglass. Note: The data are all measured manually, please allow 1-3cm error, due to differences in light and display, there may be some color differences, please refer to the actual item received.