Giottos Series I Dual Ball Tripod Ballhead MH2000-300 is a comprehensive, easy to use tripod ballhead that can lock your digital camera or camcorder in almost any position in 3D space. Though these ballheads have the same fluid motion, durable construction, and easy installation as other ball heads in the catalog of Giottos tripod accessories, they unlock a whole new dimension of motion with an additional socket ball. The second ball allows you to twist, bend, rotate, tilt, and pan your digital camera at all sorts of angles to get the shot you need; when you've got your subject perfectly lined up in the viewfinder, use the dual ball and pan lock knobs to securely lock the tripod accessory in place for as many exposures as you want. The Giottos Two-Ball Tripod Heads include a calibrated base for precise image alignment and a tension control knob that puts you in charge of the socket's friction level. Giottos has included a reversible thread on the top of these ballheads, enabling you to mount any digital camera or camcorder with a 1/4" or 3/8" thread on your tripod. To give your camera all the movement range of an acrobat in space, mount it on a tripod equipped with a Giottos Series I Dual Ball Calibrated Ballhead.