Island Pin. Honu Island Pin of a Turtle Island Heritage has added new and exciting designs to the souvenir pin category. A perfect addition to a collector's display or souvenir to take home to friends or family. Made of zinc alloy with antique brass coating, each pin has a butterfly clutch attachment. These pins are a great accessory to any wardrobe. Packaged individually attached to a card, in a re-sealable cello bag with an airplane hole for pegging. Pins measure approximately 0.75" - 1" varying by design.