Mount these slides underneath countertops, desktops, shelves, and tables. They are often used to hold keyboard trays. The slides only extend _3/4 of the closed length to reduce the chance that a heavy load will tip your cabinet. A stop holds the drawer in place when opened; push firmly on the drawer to close. All slides have ball bearing rollers for smooth, quiet operation. They include adjustable-height mounting brackets that are reversible for inward and outward mounting. If you need to remove the drawer, use the lever release to separate the different parts of these slides.