SPARES All fittings & spares available Safety Clips & Screw High Pressure Gun Swivel Gun Swivel provides provides a swiveling joint between gun and hose for free gun movement. Install at gun inlet. 1/4″ npsm (m) x 1/4″ npsm (f) available with various pressure ratings. High Pressure Hex Nipples 1/4 in NPT(m) x 1/4 in NPT(m), 3/8 in NPT (m) x 3/8 in NPT(m), 1/4 in NPT(m) x 3/8 in NPT (m), 1/2 in NPT(m) x 3/8 in NPT(m), High Pressure Swivel Adaptor Unions 1/4 in NPT(m) x 1/4 in NPSM(f), 3/8 in NPT (m) x 3/8 in NPSM(f), 1/4 in NPT(m) x 3/8 in NPSM(f).