Heavy Duty Drawer Slides 500lbs Ball Bearing Drawer Slides 40inch Long with LockThree-Section & MaterialDrawer Slide LockHeavy-Duty CapacityBall Bearing & QuietGuide for InstallationWide & Professional UsesFully Pull-Out Length: 80.2",Slide Lock: Support,Length: 40",Load Capacity: 500 lbs,Material: Cold Rolled Steel,Product Thickness: 19 mm / 0.75",Install Distance(Each Side): 19.5 mm / 0.76",Product Width: 76 mm / 3