Product description: Name: 165 pieces of stainless steel rivet nut (can be matched freely). Weight: about 370 grams Size: length 17.5 * width 10 * height 2.3 cm material: stainless steel Type: M3 M4 M5 M6 M8 M10 Package includes: 50*M3 Rivet Nut 50*M4 Rivet Nut 30 * M5 Rivet Nut 20 * M6 Rivet Nut 10 * M8 Rivet Nut 5 * M10 Rivet Nut Sturdy and durable : made of high quality stainless steel. The knurled nut facilitates insertion into the workpiece. Can be easily installed in many different kinds of hardware including steel, plastic and fiberglass. Type: M3 M4 M5 M6 M8 M10; Package Quantity: 165pcs; comes with a handy plastic box. Great rivet nut installation tools to make the job easier and faster. This assorted rivet nut kit rivet nuts contains 6 different types of nuts which are separated and stored in a neat case, you can find the suitable size quickly. The knurled nut makes it easy to insert into parts and easy to install on many types of materials including steel, plastic and fiberglass.