4 Male x Male Brass CouplerThe 4 Male x Male Brass Spool Coupler is a heavy duty, corrosion resistant fitting designed for secure and efficient fluid transfer. This coupler features two male threaded ends (M x M), making it ideal for connecting hoses, pipes, pumps, and other equipment with female threaded connections. Manufactured from high quality brass, it provides excellent durability, leak resistance, and suitability for high pressure applications. Specification Details