AD-11BESurface Mount Female Mic Flange 5/8"-27 Thread Ebony Finish is a 5/8"-27 female flange with 1-3/4" base diameter; it comes in chrome or ebony (E) (Net Weight: 1 oz.) It is designed with durability made to last long and assures compatibility. U. S. Standard 5/8"-27 Termination Accommodates All Types of Microphone Holders.