Secure camera or other electronics with the RAM® Twist-Lock™ Dual Suction Mount with 1/4″-20 Male Threaded Adapter. Made with threads the same as a camera’s tripod mount and more devices. KEY FEATURES 4-Hole AMPS: 1.181″ x 1.496″ 3-Hole 120-Degree: 1.812″ Diameter B-size ball Made from high-strength composite and marine-grade aluminum Suction Size: (2 units) 3.3″ Diameter Bases, Total Width 7.95″