We are professional insert, inserts manufacturer, we provide different specification for your plastic product according to your needs. The material would be brass, stainless steel or aluminum alloy. free cutting brass IS 319 type (I) or free cutting brass as per BS 249 type (I) or high grade free cutting brass threads style is ISO metric (MM threads) ,BA threads, BSW threads, UNC & UNF threads . Knurling is available of diamond or straight or unidirectional. Insert type is round inserts, hexagonal inserts, square inserts. We can produce other kind of brass inserts, brass insert, stainless steel insert, thread insert, plastic insert, threaded brass insert, valve seat insert, plug insert, milling insert, inserts as per customers specifications.