Specifications Used in plumbing or industrial machine. Made by numerically controlled lathe. All general sizes for clients to choose. Item name: brass nipple connector Material: brass bar. Technology: cutting by numerically controlled lathe. Surface treatment: plated or pickling. Thread type: npt, npsm, bspp, bspt and so on standard thread. Use: use for plumbing, sanitary ware, machine part and so on. Oem service offered:your designs and logos are welcome. Size: