Linear Guide Rail, Overall Length 24 in, Overall Width 1.32 in, Overall Height 0.62 in, Rail Material Aluminum Alloy, Manufacturer Size 14, Number of Mounting Holes 7, Rail Finish Aluminum w/Steel Insert, Rail Type Slide, System of Measurement Inch, For Use With Redi-Rail Sliders, Operating Temperature - Maximum 176 Degrees F, Operating Temperature - Minimum 0 Degrees F, Mounting Hole Center to Center 3.5 in, Mounting Hole Center to Shaft End 1.5 in, Channel Material Steel, Series RR