The Manfrotto 526,545GBK Professional Video Tripod System is a professional kit that features the heavy-duty 526 fluid head and the 545GB two-stage tripod. The tripod incorporates a 100mm bowl for quick leveling. The 100mm diameter of the head fitting and bowl provide a wide platform for improved balance and smooth operation, compared to smaller head fittings. The 100mm ball/bowl allows you to work with cameras and accessories up to 35 pounds, offering great torsion rigidity for better stability. It includes a ground-level spreader for a variety of applications.