VEVOR Drawer Slides, 1 Pair 40 Inch Heavy Duty Drawer Slides, Ball Bearing Side Mount Drawer Hardware Slides, 500 LBS Load Capacity 3-Section Full Extension Drawer Slides for Smooth Slide, Less Noise

The slide rails are already lubricated, so no additional oiling is required. If you want to increase the smoothness, you can also add some lubricating oil.