Features 1、Sturdy and Durable: The panoramic panning base is made from aluminum alloy, adopts CNC oxidized surface, making it smooth, wear resistant, and rust resistant. 2、Scale Display: The panning base is equipped with a scale adjustment button, allowing photographers to easily catch continuous shots at a constant angle around the vertical axis. 3、High Compatibility: The panning base has a 3/8in screw hole and a 1/4in screw hole, making it compatible with a variety of equipment for photography. The top features a standard 1/4in screw, making it compatible with most cameras. 4、Horizontal Assistance: The panoramic tripod rotating head has a built in bubble level, making it easier and more precise to catch or shoot at horizontal angles. 5、Smooth Panning: The panning base is designed to provide smooth and seamless panning motion, allowing for panoramic photography or video recording with ease and accuracy. Specification Item Type: Panoramic Ball Head Material: Aluminum Alloy Diameter: Approx. 60mm / 2.36in Bottom Thread: 1/4in and 3/8in (Need to remove inner ring) Top Interface: 1/4in Screw Package List 1 x Panoramic Head