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.