【Strong and Durable】: Metric Flat Threaded Rivet Nuts are made of high quality stainless steel. They have superior rust resistance, which can guarantee a long service life. 【Deep Thread】: These rivet nuts are knurled with deep thread inside, which are effective in fixing and non-slip. The knurled nut facilitates insertion into the workpiece. 【Great Installation Tools】: Great rivet nut installation tools to make the job easier and faster. 【Size and quantity】: Type: M8; Package quantity: 100pcs. 【Widely Used】: Blind nuts can be easily installed in many types of materials including steel, plastic and fiberglass.