Features: The U18 Heavy Duty Clamp features a 17mm female ball socket for phone mounts, tablet holders, and photography equipment, securely gripping pipes from 15mm to 40mm diameter for motorcycle handlebars, gym machines, or tripods. Crafted from plastic with a reinforced crabs clamp design, this versatile adapter includes anti slip teeth and adjustable rotation to stabilize cameras, lights, or positioning devices on uneven surfaces. Ideal for content creators, motorcyclists, and photographers needing stable mounting ways for live streaming phones, action cameras, or studio lighting during outdoor adventures or indoor shoots. Effortlessly attach to bicycles frames, office desks, or thick poles (up to 35mm) for hands freely workout tracking tablet setups, or positioning reflector panels in professional photography times. Its 17mm ball joint base seamlessly integrates with most standard phone mount accessories, while the heavy duty clamp ensures stability during high speed rides or dynamic filming scenarios. Specifications: Component: Plastic Size: Approx. 8.5x4x3.2cm/3.34x1.57x1.25inch Can clamp round tubes with diameters of 15mm-40mm, and can clamp 35mm thick wooden boards 17mm cue ball head base clip mobile phone holder accessories Package Includes: 1x 17mm Ball Head Claw note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.