Atlas Sound AD-4B3/4" Long,5/8" #27Thread Male Coupling Adapter Brass is a male running thread made of brass and has no plating (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.