Celebrate Christmas and Halloween...any time of year! Stunning pewter key chain featuring Jack Skellington from The Nightmare Before Christmas . Take Jack with you anywhere! Nightmare Before Christmas Double Jack Skellington Pewter Key Chain. This stunning pewter key chain features the one and only Jack Skellington, with a design inspired by a playing card! Give your keys some nightmarish style - order yours today! Measures about 2 1/2-inches tall x 2-inches wide x 1/8-inch deep.