The Slider is a camera platform that is extremely sturdy and lightweight owing to its innovative open frame construction. It is both camera operator and grip friendly, being virtually maintenance free (just keep it clean) and totally field adjustable with few basic tools: one 7/16" open wrench and a set of Allen wrenches.
It can work upside-down for low-angle shots, can support more than one carriage at a time for A and B camera shots, and it has positive lock at 90 degrees when in use on most dollies (Chapman, Fisher, Panther, etc.). Each carriage can support up to 175lbs (80kg) - bracing of tracks might be necessary. The system uses proprietary wheels with ABEC5 stainless bearings with ceramic balls which make it very fast and extremely quiet.
The Matthews-Slider comes in four basic sizes: 29", 35", 45" and 70" (74cm, 89cm,114cm and 178cm) and is also available in many custom lengths in 4.75" (12cm) increments between cross members up to 12' (366cm). Each foot/track adds approximately 3lbs (1.4kg).