The Glidetrack 20" Glidetrack Shooter HD & Manfrotto 502HD 3/8"-16 Head/Base Kit from B&H combines two items that greatly match to achieve a variety of professional-looking tracking shots as well as shoulder-supported stable handheld shots with mid-size DSLR and camcorder rigs of up to 8.8 lbs.
The 20" Glidetrack Shooter HD (Heavy Duty) doubles as both a slider and a shoulder support. It is of yet sturdier construction than the SD version and has self-lubricating 16mm rails designed for smoothness in getting tracking shots and glides at angles. Adjust a couple of knobs, and you've got before you a shoulder support with dual grips, a soft shoulder pad, and a removable center handle.
Like the Shooter, the Manfrotto 502HD Head is also designed for smooth operation. 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 Glidetrack and Manfrotto are conveniently packaged as great matches in quality and function.