Features 1、Firm for Fixing: Knurled and threaded design ensures firm screwing in without loosening or slipping, largely improving the connection. 2、4 Types in Pack: This assortment has 30pcs M6 knurled nut, 30pcs M8 knurled nut, 30pcs M10 knurled nut and 30pcs M12 knurled nut. 3、Practical Using: Widely used in agriculture, aviation, material handling, marine, factory and construction, machinery, hardware, etc. 4、Stainless Steel: Mainly made of premium stainless steel material, the rustproof threaded insert also has high strength for long use. 5、Easy to Install: Light in weight and compact in size as well, the knurled insert enables the easy installation to be easily finished. Specification Item Type: Rivet Nut Material: 304 Stainless Steel Package List 30 x M6 Nut 30 x M8 Nut 30 x M10 Nut 30 x M12 Nut 1 x Storage Box