The MAVERICK Ball-head T-Post Clamp is the most secure way to attach anything with a 1/4” x 20 thread securely to a t-post. Perfect for Slow Glow lights, trail cameras, solar panels, motion detectors, hunting lights, GoPro Cameras, and other accessories with a female threaded insert. Pivot and tilt your accessory exactly where you need and lock it down. Fits all 3 sides of a standard T-post and stays secure indefinitely.