Brass inserts. Competitive Advantages of the products : 1, High Quality Brass Inserts, 2, Available in different size and type, 3, Knurling options availability to give solid gripping to Molding applications & Fittings, 4, Threads as per International Go & Not Go Standards, 5, Brass Inserts Size from M2, M3, M3.5, M4, M5, M6, M8, M10, M12, M16, M20, 1/8, 5/32, 3/16, 1/4, 5/16, 3/8, 1/2, 3/4, 1 in Metric, BSW, BSF, BSP, R, G, UNC, UNF, NPT, NPSM, NPTF, FPT Threads, 6, Available as per customers drawing & specification.