Keeps flaps of projects secure. Get creative and add to other projects as well for a rugged look. Pin is 3-3/16" (80.9 mm) long with an 11" (279.4 mm) chain. Base plate is 2" x 7/16" (50.8 x 11.1 mm). Base plate attaches with two rivets (not included). Attach chain to projects with lace, thread or a leather tab.