Feature: Bulkhead fittings are made of 304 stainless steel, which is corrosion-resistant, rust-proof, offers good ductility at high temperatures, and has low magnetic permeability, ensuring a long service life. Can be mounted in water towers, water tanks, water inlets and outlets, self-made water storage containers, rainwater collection systems, and can also be used with pipes, hoses, pipe fittings, or faucets. The bulkhead design allows the fitting to pass securely through holes without leakage. Multi-functional tool; the threaded bulkhead conforms to the shape of round barrels, helping maintain water storage integrity season after season. Suitable for home, school, factory, commercial, and industrial applications. Easy to install: drill a hole between 68-78mm for installation, then assemble the water tank connector and plug connector together, threading from the front end. Cover the plug to prevent dirt and dust from entering the tank and keep it clean. 2-inch NPT female threaded connection. Note that NPT thread size is a nominal pipe size and not the actual diameter. Please verify dimensions before ordering. Stainless steel partition joints are commonly used in water tanks, water towers, water inlets and outlets, DIY water storage containers, rainwater barrels, and are compatible with pipes, hoses, fittings, or faucets. Important: The lock nut has a left-hand thread; the external thread is designed for securing the lock nut and cannot connect directly to a pipe. Specification: Size: 1.5 inch (3.8cm) Name: Bulkhead Water Tank Fitting Material: Stainless Steel Color: Silver Package Contents: 1 x Bulkhead Fitting Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement tolerance is +/- 1-3cm.