The Atlas 30 58" Rail Kit with Regular Legs and Manfrotto 502 Head by B&H combines 2 great products for the image maker.

The Cinevate Inc. Atlas 30 58" Slider with Regular Legs is a linear tracking system that can bear a load up to 30 lb (13.61 kg). It is made from a single block of aluminum and is supported by 5/8" (1.59 cm) chromed steel rods. Offering support for cinematic camera rigs, the Atlas 30 58" Slider with Regular Legs can be mounted on tripods or C-stands.

The Manfrotto 502HD Pro Video Head with Flat Base (3/8"-16 Connection) is an affordable yet remarkably full-featured professional head that represents an advance over the popular 501HDV, with sturdier construction and featuring Manfrotto's patented bridging technology (inherited from the 509HD and 504HD heads). The 502HD is designed for executing cinematic moves with compact camcorders and DSLR video cameras. The head supports up to 8.8 lb, and spring-loaded counter balance is set for that weight. The balance plate's 3.27" range allows you to correct for uneven payloads that might be due to matte boxes or exotic DSLR rig configurations. The bridging technology ensures that the pan friction control is intuitive and easy to set, but also protected against knocks. There are of course independent locks for pan and tilt, and drag for both is selectable in a continuous range from zero to the max level. This allows you to operate the head in a confident, smooth manner using the included pan bar.