Vanguard Tracker 1 Aluminum Tripod with 3-way Magnesium Alloy Video Panhead All-aluminum alloy construction, specially designed for 35mm SLR or medium format use Self-adjusting conical bearing locking system for 360-degree rotation on both the vertical and horizontal plane Full 3-way action with each axis movement controlled by separate locking handles Large easy grip ratchet, quick release plate, and secondary safety lock 17.5-pound maximum load capacity, 67.5-inch maximum extended height