Make your photography and videography sessions more efficient with the Tether Tools Rock Solid Master Clamp. This versatile and robust tool is designed to securely mount a variety of equipment, from cameras and strobes to umbrellas and cross bars, onto an array of round or flat surfaces. Constructed from durable, lightweight cast alloy, the Rock Solid Master Clamp offers a wide range of adjustability, accommodating tubes from 0.5"" to 2.1"". This feature ensures flexibility in positioning your equipment, making it an indispensable asset for professionals and hobbyists alike. The package includes a unique wedge insert, designed for clamping onto any flat surface or shelf, further enhancing its versatility. The clamp also boasts a built-in locking 5/8"" (16mm) Baby socket, compatible with a multitude of attachments and arms. This feature facilitates the secure holding of cables, lights, Tether Tables, and more, simplifying your setup process. The Rock Solid Master Clamp is also equipped with a 5/8""(16mm) Baby stud, featuring a 1/4""-20 male thread, adding to its adaptability. The all-metal, lift ratchet style handle ensures easy and secure tightening, even in confined spaces. In essence, the Tether Tools Rock Solid Master Clamp is a reliable, sturdy, and robust tool that enhances your photography and videography experience by providing a secure and adjustable mounting solution for your equipment..