Versatile 1/4"-20 Thread Adapter:Features a standard 1/4"-20 threaded hole for seamless attachment of lights, microphones, monitors, and other accessories, perfect for multidevice setups with compatible screws. Wide Compatibility :Works with tripods, magnetic phone holders, tablet clamps, selfie sticks, and more, thanks to its 1/4inch thread hole design for broad accessory integration. Adjustable Clamp Ranges : a flexible clamping ranges from 15mm to 45mm, securely gripping round tubes or flat objects up to 40mm thick for stable mounting. Double Function Clamp Design:Combines a sturdy clamp with a 1/4inch threaded hole, enabling simultaneous attachment to surfaces and connection of additional camera or phone accessories. MultiScenario Application:Ideal for biking, fishing, vlog, outdoor activities, providing reliability for cameras, phones, and accessories on uneven surfaces or moving vehicles.