3M 07148, Dual Airline Back-Mounted Breathing Tube SA-2500/07148(AAD), 7000002006, 1 EA/Case 
Dynabrade 97568 3/8" NPT Female Safety Coupler 
Dynabrade 95685 – 1/4″ Male Coupler with 1/4″ Male Plug Assembly
$29.99
— ONLY USE DYNABRADE COUPLERS WITH DYNABRADE PLUGS
1/4″ Male Coupler with 1/4″ Male Plug Assembly
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