AM-S series is a standard single-barb adapter with no parting line on the barb. Also, It has 1/16" or 1/8" male NPT threads. It is available in white and black Nylon and natural Polypropylene. Furthermore, PTFE barbed fittings are available 1/8" to 1" Male NPT. The barbs will expand the tubing 50% above its normal size. In fact, these Adapters are used primarily for medical and laboratory settings. Orifices are available.