1/4ips Female Threaded X (3) 1/8ips Female Threaded - 4-Way - 1-1/4in Diameter x 3/4in Height - Disc Armback - Unfinished BrassUsed in 4 way configurations. This 1/4 IPS Female Threaded x (3) 1/8 IPS Female Threaded 4-Way Disc Armback in Unfinished Brass is used in four-way lighting configurati... See More