Please consider Milton Industries 786, 1/4" MNPT Male T-Style Compressor Quick Connect Fitting Coupler as an alternative.
This air compressor coupler has hardened steel balls, as well as stainless steel springs. This coupler has a 1/4" malea end, and can interchange with Tru-Flat 10 and 100 type series couplers, as well as air compressor hose couplers produced by other manufacturers.
Maximum working pressure - 300 PSI
Part #: CP2-23
Part #: CP1-03
Part #: 7116-251-15
Part #: 7116-251-6