Vanguard%27s SBH%2D50 Ball Head is compact %283%2E5%22%2C 9cm%29%2C lightweight %2810%2E2 oz%2C 290 g%29%2C and features 2 bubble levels for precision attitude adjustment%2E It also has a safety locking system for quick release%2C and a single knob locking mechanism%2E It will support cameras%2C lenses and camcorders up to 13%2E2 lb %286 kg%29%2E The ball head%2C when placed upon a tripod%2C will increase camera stability and provide faster%2C more accurate camera positioning%2E