High pressure fitting. 8000 psi 1/4" x 1/4" Live swivel. This swivel will continue to swivel when under pressure and tighten to all parts. Part is 1/4" NPFS x 1/4" NPTM Made from plated steel. Used for high pressure paint and water applications. Use between the gyn and hose or the hose and pump. No other fittings are needed. P/N# 641300x1 On Sep-03-09 at 10:46:06 PDT, seller added the following information: NOTE: OUR HIGH PRESSURE FITTINGS ARE ALL NPT THREADS. (NATIONAL PIPE THREADS) NPT THREADS ARE THE COMMON THREADS USED IN PAINTING EQUIPMENT HOSES AND HYDRAULIC HOSES.