Lightweight, durable magnesium construction with open body design. 2 bubble levels Rapid Level System enables you to quickly guide your camera to be perfectly level with the base Universal 38mm quick shoe plate with large locking knob (QS-60 quick shoe included) Scratch-free, oxidized surface on central ball for ultra smooth movement. 360 degree panning Weight: 15.9 ounces. Load capacity up to 22 pounds