Atlas Sound AD-5B5/8" #27Thread Female Coupling Adapter Chrome is a emale to 5/8"-27 female coupling made of chrome plated (Net Weight: .6 oz.) This model is designed with durability for use in Touring P.A. Applications, assures compatibility and long lasting use. Its U. S. Standard 5/8"-27 Termination Accommodates All Types of Microphone Holders.Diameter