These Male-Female threaded Inserts are installed during Injection Moulding of PPR-C (Poly Propylene Random Copolymer Pipe And Fitting) like Male Female Coupling, Elbow and Tee, later which helps in fixing other joints of PPR-C Pipes to close or cover that end or to give the extension to PPR-C Pipes. Hence we take utmost care of the Inner Diameter (I/D) and their various threads like 1/2", 3/4" or 1" for the perfect tightening in it. Material: Brass BS-249 Brass IS-319 Free Cutting Brass CZ-360 High Grad brass Any special brass material composition as per customer specifications. Threads: ISO Metric BSW Threads BA Threads BSF Threads UNC Threads UNF Threads UNEF Threads Any special threads as per customer specifications. Finish And Coating: Natural Nickle Plated Chrome Plated Tin Plated Any Coating As Per Customer Specification Unique features: Threads as per international GO & NO-GO Standards. High Durability High tensile strength Inner diameter (I/D) after threads with very close tolerance to prevent unnecessary flush to inter into the inserts. Available Knurling are Diamond Knurling, Straight Knurling, Unidirectional Knurling or as specified. Deep groove for maximum pull out resistance. Pipes to suit Copper pipes Nylon pipes,PEX pipes and Automotive pipes. Compression fittings are with olives Standard Packing as per customer requirement