Plastic shelf support with 5mm peg.
Locking Shelf Support With 5mm Peg For 1/2″ Thick Shelf
Locking shelf support w/ two 5mm pegs space 32mm apart. For 3/4″ thick shelf.
Low Profile Shelf Support With 1/4″ Peg that is 1/4″ long
Low Profile Shelf Support With 5mm X 0.29″ Peg