I have 10 double pin, (probably imported) and used tri clover clamps to fit 1" and 1.5" fittings. price is $25 shipped. I also have 15 tri clover clamps to fit 1/2" and 3/4" fittings for $30 shipped. These are still in the blister wrap, Waukesha brand. Paypal accepted. P.M. me please.