Under-mount drawer slide socket. Has 8mm pegs.
Ball Bearing Drawer Slide socket 1-13/16″ X 3/8″ X 2-7/8″ Socket With Two 10mm Pegs 32mm Apart For Full Extension Drawer Slide. This is a set of left and right sockets; each side is packaged separately.
For under-mount drawer slides. 8mm, center-aligned pegs. Smooth friction.
Dual under-mount socket.
Euro Side Socket 5/16″ X 13/16″ X 2-1/8″ Fixed. This is a set of left and right sockets; each side is packaged separately. This also come in standard and self-closing varieties.