Feature: Bulkhead fittings are made of 304 stainless steel, which is corrosion-resistant, rust-proof, corrosion resistant ductility at high temperatures, and low magnetic permeability, has a long service life. Can be mounted in water towers, water tanks, water inlets and outlets, self-made water storage buckets, rain buckets, and can also be used in various pipes, hoses, pipe fittings or faucets. Bulkhead design to make the fitting easy through holes without leakage. Multi-functional tool, the threaded bulkhead will contour to the shape of the round barrels, maintaining your barrel with rain water season after season. It is suitable , school, factory, commercial and industrial use. Easy to install, you need to drill about 68-78mm hole for installation, and then assemble the Water Tank Connector and plug connector together, threaded from the front end,cover the plug to prevent dirt and dust from entering the water tank and keep it clean. 2inch NPT female threaded, NPT thread size is not the actual diameter, it is only nominal pipe size. Please check the size before ordering. Stainless steel partition joints are commonly used in water tanks, water towers, water inlets and outlets, self-made water storage buckets, rain buckets, and can also be used for various pipes, hoses, pipe fittings or faucets. Note:The lock nut is Left-hand thread,and the external thread is used for the lock nut and cannot be connected to the pipe. Specification: Size: 1.5 inch(3.8cm) Name: Bulkhead Water Tank Fitting Material: Stainless Steel Color: Silver Package Contents: 1 x pcs bulkhead fitting Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.