Atlas Sound AD-15BFeed-Thru Adapter Allows Wire To Be Fed Inside Tube is a Chrome 4" cable feed-thru adapter with standard 5/8" male and female threads. (Net Weight: 2.2 oz.) It is designed with durability for use in Touring P.A. Applications. Its made with quality to be used for a long time and assures compatibility. It is U. S. Standard 5/8"-27 Termination Accommodates All Types of Microphone Holders