Selby's Clear "Snapclip" Shelf Support is a double-locking rest for 3/4" thick shelves. Shelves are locked in vertically and held tight by a horizontal compression finger at each end, avoiding rattling and vibration. The rest measures 2-3/8" high x 11/16" wide. It presses into a 5 mm hole 5/16" deep. Available in clear polyethylene.