The Cinevate Inc 35" Atlas 10 LTS DSLR Slider & Manfrotto 502HD Head/Base 3/8"-16 Kit from B&H adds a well-made flat head onto a sophisticated, multi-purpose mini dolly system.
The Atlas 10 is a 35" mini-dolly designed with a ball bearing system that very smoothly slides a DSLR rig of up to 40 lb in any possible direction -- sideways, forward, backward, up, down, panoramically, and at angles. It can very effectively also be used as a crane when attached to a tripod, and can optionally be transformed into a counter-balanced vertical pulley system.
Like the Atlas 10, the Manfrotto 502HD Head is also designed for smooth operation and is as well a well-thought-out and well-constructed device. It features Manfrotto's patented bridging technology that ensures pan friction control is intuitive and protected from knocks. Among other features are independent locks for pan and for tilt, as well as continuously adjustable drag for each.
The Cinevate and Manfrotto are conveniently packaged as excellent matches in quality and function.