From the Manufacturer
This specialty metal prong hook is 1-1/8-Inch Width by 3/8-Inch Diameter by 1-1/4-Inch Height. The metal prong hooks fit standard size pegboard. The prong off the hook is perfect for hanging frames, brochure holders, or small cups and other items. Sold in packs of 20.
Azar Displays 700017 Metal Prong Hook 20-Piece Set - B004HIMWNO