Linear Guide Rail, Overall Length 720 mm, Overall Width 65 mm, Overall Height 28.6 mm, Rail Material Aluminum Alloy, Manufacturer Size 65, Number of Mounting Holes 7, Rail Finish Aluminum w/Steel Insert, Rail Type Slide, System of Measurement Metric, For Use With Redi-Rail Sliders, Operating Temperature - Maximum 176 Degrees F, Operating Temperature - Minimum -4 Degrees F, Mounting Hole Center to Center 80 mm, Mounting Hole Center to Shaft End 40 mm, Channel Material Steel, Series RR