The GLVT3048 is a combined, miniature Linear Dual Track and Dolly System. Made to professional standards with precision components. The Glidecam VistaTracks are the premier Camera Sliders of the industry at their price point. The Glidecam VistaTrack will allow you to create super-smooth camera movements that are accurate and vibration free, greatly increasing the value of your productions. The VistaTrack 30-48 can be used with cameras weighing up to 30 pounds when attached to a single tripod or when using it's integrated adjustable legs. The VistaTrack 30-48 can be used with cameras weighing up to 60 pounds when attached to two tripods for added stability. The VistaTrack 30-48 is a dual track system with a tripod Mounting Plate and a tripod head Mounting Plate. To attach the system to two tripods an additional tripod Mounting Plate is required which is available to purchase as an option. The VistaTrack 30-48 has a 48" long track, and is also available in 24" and 36" lengths. The VistaTrack 30-36 has a 36" long track, and the VistaTrack 30-24 has a 24" long track. The Mounting Plates are compatible with most 1/4"-20 and 3/8"-16 mounting applications. Can be used on flat surfaces, uneven surfaces and mount to tripod heads or legs. Black Anodized Finish on Aluminum Body. The Bearings are integrally sealed, double-row ball bearings that are lubricated for life. The Dual Bearing Slider assembly is equipped with wiper seals to maintain smooth operation in tough surroundings.