This Washer Mount Industrial Open Bulb Cage is for oversize standard-bulb sockets and is a great way to accentuate any bulb on a pendant style fixture. It measures 7-1/2" tall and 4-3/4" wide with a wire diameter of 2.88 millimeters and fits over a 1-11/16" threaded socket. Looks great with an old-fashioned Edison style bulb. Bulb cages like this one are becoming popular in commercial settings like restaurants and bars for their vintage-meets-modern ambiance.