Under-mount drawer slide socket. Has two center-aligned 8mm pegs.
Dual under-mount socket.
1-11/16″ X 7/16″ X 2-9/16″ Socket For Full Extension Drawer Slide
5/16″ X 13/16″ X 2-1/8″ Adjustable Socket for Euro Slides. Staple or screw in place. This is a set of left and right sockets; each side is packaged separately. This also come in standard and self-closing varieties.
Full Extension Adjustable Drawer Slide Socket 1-3/4″ X 3/8″ X 4″ with 1/2″ left-to-right adjustment. Fits full extension drawer slides from many different manufacturers. Side-mount using screws or staples. This is a set of left and right sockets; each side is packaged separately.