This listing is for 1 dozen (12pcs) new mini button compasses.These well-made mini compasses are perfect for use in compact,mini, or pocket survival kits. Or put them onto your walking stick,knife, binoculars, backpack, etc. OD size: 20mm (approximately sizeof a penny) Easy to read compass dial sealed with clear acrylic topand black plastic base Grooved edge for easy carrying with alanyard.