Who knew an RFID guard could look so cool and function as a bottle opener? Keep your identity safe with the Ace of Spades Bottle Opener RFID guard. Awesome novelty item that fits inside your wallet. Opens all bottle caps. RFID blocking protection design, keep your private information away from thieves' scanning devices. Material: Stainless Steel. Dimensions: 3.5" x 2.25" x 0.25"