Features:Material: PVC plasticColor: as picture shown.Inner hole: approx. DN20 (3/4")< /p>Inner hole size: about 24.3mm.Cap thickness: about 11mm.Outer thread diameter: about 37.8mm.Interface total height: approx. 47mm.External thread depth: approx. 38.5mm.Thickness of the plastic ring : approx 3.5mm.Not zero materialColor As PicturedItem dimensions L x W x H 32 x 10 x 8 centimetersWeight 0.01 KilogramsAbout this itemPackage content: 2 x 1.9 cm PVC bulkhead fittings for barrels rain, water tanks or aquariums, these are good toolsSize: inner hole: about DN20 (3/4"), inner hole size: about 24.3mm, cap thickness: about 11mm, outer thread diameter: about 37.8mm, total interface height: about 47mm, outer thread depth: approx. 38.5mm, plastic ring thickness: approx. 3.5mmFunction: Lock nut is reverse threaded, bulkhead fitting with 4mm thick silicone gasket that conforms to the shape of round barrels.Easy to install: drill a 4.5cm hole to install the bulkhead fitting adapter with gasket durable silicone sealant that will seal the tightness.Widely Used: Water hose connector applicable for durable commercial plumbing, aquariums, reef tanks, irrigation, swimming pools and water parks.