I have used these drawer slides in the past and they are fairly easy to install and hold up well even after years of multiple daily use. A few things I do when installing are always carefully measured rectangular center lines on the inside of the cabinet and drawer. Second, I set the slider fully closed flush with the front of the case and hold it when needed and pull out the inside of the slider to access the two slots. Align the pilot holes in the center of the case's centerline and use an awl to make a hole in the center of the visible slots. Now pre-drill the holes and screw the roller shutter tight. Then pull the screw all the way out so you can mark and pre-drill all the other slots. If the drawer is installed and there is a gap in the drawer or the slide latch will not engage, you can loosen the screws and move the slide forward or backward to ensure a proper fit.