Features: Ball head diameter is 36mm / 1.4in. All-metal ball head, very smooth hand feel and excellent durability. Built in bubble level indicators. Three independent control knobs, adjust different rotation angle. Scale on the pan for panoramic shoots. A removable quick-release plate is suitable for cameras with 1/4" screw. 3/8" screw mount for various professional tripods, combined with the 1/4" to 3/8" Screw Adapter. Specifications: Main material: Aluminum Maximum load: 8kg / 17.64Lbs Item size: Approx. 5.5 * 10cm / 2.2 * 3.9in (Base D * H) Item weight: 377g / 13.3oz Package size: 10.5 * 10.5 * 8.5cm / 4.1 * 4.1 * 3.3in Package weight: 417g / 14.7oz Package List: 1 * Tripod Ball Head 1 * Quick Release Plate 2 * 1/4" to 3/8" Screw Adapter