3/8 Inch Universal Steel Coupler x 3/8 Inch Female NPT, PK 6, Interstate Pneumatics, Mfr#: CG660-D6$56.19+
1/2 Inch Automotive Steel Coupler Plug x 3/8 Inch Male NPT, PK 50, Interstate Pneumatics, Mfr#: CPA861-50K$188.99+
D Automatic Interchange Pneumatic Coupler, 1/2 x 3/8 in, Quick-Connect x MNPT, Brass, Dixon, Mfr#: 4DM3-B$38.99+
1/4 Inch Industrial Steel Coupler Plug x 1/4 Inch Male NPT, Interstate Pneumatics, Mfr#: CPH441$5.99+
1/4 Inch Automotive Steel Coupler Plug x 3/8 Inch Male NPT, PK 100, Interstate Pneumatics, Mfr#: CPA461-100K$214.99+
1/4 Inch Industrial Steel Coupler Plug x 1/4 Inch Male NPT, PK 100, Interstate Pneumatics, Mfr#: CPH441-100K$108.99+
M Series ARO Quick Disconnect Pneumatic Coupler, 3/8 in Nominal, Quick Disconnect Coupler x FNPT, 30, Dixon, Mfr#: 2MM3-PL$16.69+
DF Series Industrial Female Quick Disconnect Pneumatic Plug, 1/2-14 Nominal, Quick Disconnect Plug x, Dixon, Mfr#: D4BF4$12.79+
DQC K Interchange Female Plug, 1/2-14 Nominal, Female BSPP, 316 SSss Steel, Dixon, Mfr#: K4BF4-SS$124.99+