Hafele Full Extension Drawer Runner.
Ball Bearing Race 45kg Rated Price per Set (One Drawer).
Middle member of the slide has three tabs, so the runner can be secured to the base of the drawer as well as the side.
Fixing with a 6g or 8g Screw or a 5mm Euro Screw. Travel Length is the same as the Slide Length
Link to Hafele product page.