Use the Charles Leonard map tacks push pins to pin point or highlight locations on a map. These pins have a diameter of 0.38 inch and come in several assorted colors which are easy to locate. The assorted map pins have solid plastic heads for added durability and the steel pins are rust resistant, which makes them last longer. These handy office essentials come in a clear plastic case. Each individual pack contains 20 Tacks, Bundle of 12 packs, 240 Tacks total.