Vanguard's TBH-300 Ball Head With Micro Adjustment is a heavy duty ball head that features a micro adjustment fine tuning knob with the locking knob that gives you total control over ball friction for precise adjustments when composing your images. You can reposition your camera quickly, easily, and accurately. The TBH-300 is compact (4.92" (125mm)), weighs just 19.75 oz (560 g), has a durable magnesium housing, and features 2 bubble levels for precision attitude adjustment. It includes a 38mm universal quick release system, a built-in safety pin to prevent the risk of accidentally releasing your camera, and a single knob locking mechanism. It will support cameras, lenses and camcorders up to 66 lb (30 kg).