Atlas Sound AD-4B Male Coupling Adapter Brass, 3/4 Inch Long, 5/8-27 Inch ThreadAtlas Sound AD 4B Male Coupling Adapter Brass, 3 4 Inch Long, 5 8 27 Inch Thread 3 4" long, 5 8" 27 male running thread; brass, no plating (Net Weight: . 6 oz) Key Features Durable Design for Use in Touring P. A. Applications Quality Craftsmanship Assures Compatibility and Long Lasting Performance U. S. Standard 5 8" 27 Termination Accommodates All Types of Microphone Holders Technical Specifications Height 3 4" (1. 91 cm) Diameter 5 8" (1. 59 cm)