V-Style Hi-Flow Coupler 3/8 Inch NPT Male

Very poor quality, (Taiwan) put 100 # test on line with couplers not installed held for 2 weeks still at 100 psi, installed couplers all leaked mostaround the sleeve, two leaked from inside the fitting. Pressure in the line went down to 0 PSI in one day. Contacted Milton via email and phone message (no live person), No response, been over a week. I will return all purchased for refund. Will move to something (made in USA) and see if I have better luck. Order # 267219