Milton 1/4" NPT Female P Style Coupler, a heavy-duty steel coupler with 8 locking balls for better retention of plugs. It has a 3/8" flow size, a maximum of 300 lb per sqin, a maximum air flow of 68 standard cuft per minute, and a maximum temperature of 250 degrees Fahrenheit. This coupler is compatible with 1/4" x 3/8" T-Style.
WARNING: Cancer and reproductive harm. www.P65Warnings.ca.gov.