Features: Upgrade your mounting systems with these double aluminum alloy 17mm ball head adapters featuring 1/4" female threads, delivering general compatibility between phone mounts, magnetic holders, and professional camera rigs. Crafted from easy carry yet strong aluminum alloy in two color option, this adapter converts 1/4" female threads to a 17mm ball head joint for flexible multi angles adjustments in photography and videography setups. Ideal for content creators, motorcycle vloggers, and photography enthusiasts requiring stable equipment stabilization during dynamic shoot conditions or mobile navigation. Securely mount devices for live streaming event , action camera setups on bikes, or studio grade filming with its anti slip ball head mechanism and shaking resistant design. This essential phone mount adapter bridges compatibility gaps across devices, ensuring your smartphone or action camera stays firmly positioned in any adventure or professional workflow. Specifications: Component : aluminum Diameter: Approx. 17mm/0.7 inches Total length: about 35mm/1.4inch Package Includes: 2xBall Head Adapter 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.