This is a Guitar Pick pin with the Grateful Dead Steel your Face on it. Post Length is 9mm The pick has a hard epoxy on the front and back to protect it from scratches and scuffs. It is water resistant but not water proof. This pin can be used for a hat, jacket, vest, sash, lapel, tie and any other thing you can think of too stick it in. :) Shipping on this pin automatically includes shipping insurance. Thanks for looking!