This Davis & Sanford 75mm ProVista Tripod, FM18 Head, and W3 Dolly with 3" Wheels Kit from B&H Photo combines the ProVista 7518 tripod with the FM18 fluid video head and a W3 universal dolly to provide rigid support for those who need strength more than versatility in height options, as well as mobility in a studio setting. The tripod assembles to its working height very quickly thanks to a 75mm claw ball and self-aligning quick-flip leg locks. The W3 Universal Folding Dolly can be used with all standard tripods, is adjustable, and can be folded up to a compact 24 x 7" size. The 3" ball-bearing rubber/metal wheels feature "step on brakes" that lock and unlock the rolling and swivel movement of the wheels. This is a great studio support system for video work.