Linear Slide Roller Carriage, Carriage Height 20.9 mm, Carriage Length 114.3 mm, Carriage Width 38.1 mm, Carriage Material Aluminum, Roller Material Stainless Steel, Radial Load - Maximum 850 lbf, Axial Load - Maximum 168 lbf, Manufacturer Size 18, Dynamic Load Capacity 1,032 lbf, Requires Lubrication Lubricant Not Required, Carriage Type Roller, For Rail Width 30.251 mm, For Use With Redi-Rail Sliders, Static Load Capacity 232 lbf, Combined Carriage and Rail Height 28.575 mm, Series RRS