Plastic heavy duty shelf support with dual 5mm pegs spaced 32mm apart, commonly found in garages and closets.
Locking Shelf Support With 1/4″ Peg For 1/2″ Thick Shelf
Locking Shelf Support With 1/4″ Peg For 5/8″ 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