This CIRCLE SHAPE Bottle Opener Magnet with a USA FLAG design is made from zinc alloy and is nickel plated. They measure 3 7/16" top to bottom and the imprint area is 3.375" in diameter. The backside magnet measures 1.25" in diameter and is enclosed in its own casing. Packing is bulk with individual poly bags. Please contact our office for any other custom flags or other custom designs.