Features: Material: PVC plastic Color: 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 material Color As Pictured Item dimensions L x W x H 32 x 10 x 8 centimeters Weight 0.01 Kilograms About this item Package content: 2 x 1.9 cm PVC bulkhead fittings for barrels rain, water tanks or aquariums, these are good tools Size: 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. 3.5mm Function: 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
