Porto-Power by Blackhawk Automotive Fittings
Fittings
Blackhawk Porto-Power offers a great assortment of the most common adapters and fittings for automotive repair hydraulics.
Items:

B65129
Reducer from 3/8" to 1/4"

B65131
1/4" NPTF Gauge Fitting

B65132
Bushing from 1/4" to 3/8"