Y shaped, made of Brass. Fitting: 3/8 quick coupler plug + 3/8 quick coupler socket. Working pressure is up to 5000 PSI.Quickly connect this branch tee to the outlet of the high-pressure washer, and then connect two high-pressure washer hoses to either end of the washer separator.This coupler splits is made of high quality material for abrasion resistance and durability. The material is not easily deformed and has a long service life.Quick connect this Branch Tee onto the pressure washer outlet, then connect two pressure washer hoses to either end of the 2-gun splitter. Allows for 2 pressure washer users simultaneously.Attention: Ideal for pressure washers higher than 4.0 GPM. When running two guns simultaneously, this coupler splits the GPM between the two guns and it is necessary to change the pressure washer nozzle to achieve desired results.The three-way joint converts a single high pressure washer into a dual system. If you dont have 2 machines, this is a great way to force cleaning in large jobs.