FeaturesIdeal for broilers, breeders, layers, pullets, ducks and game birds.Manufacturer recommends 3 birds per nippleDoes not require a drip cup.Screw directly into PVC pipe, or use reducing tees with Teflon tape for round PVC pipe.Delrin body, 360° side-action pin.Working pressure should be reduced to under 1 PSI.SpecificationsScrew Size: 11/32"Pilot Hole Drill Bit Size: 5/16"NPT (National Pipe Thread Taper): 1/8"360 degree stainless steel nippleWeight: 8.5 grams per assembled nippleColor: red