DESIGNER: Steve Nicholls, Ali Morris MATERIAL: Brass, Stainless Steel SIZE: 3.5" x 0.625" x 1.5"" (7 cm) The Hokey Cokey puzzle lock is a ton of fun! Initially, an IPP exchange gift from Steve Nicholl's IPP, Hokey Cokey was so popular they made another production run. The lock comes with a handy bottle opener attached to two different keys. The locking mechanism is highly unusual. If you're a fan of puzzle locks, this is a must-have for your collection. You can find reviews of this puzzle lock here and here . A blog review by Mr. Puzzle can be found here (WARNING: Blog contains solution spoilers) Handling Metal Puzzles While all metals tarnish over time, residual oil and salt from handling speeds up the process and leaves fingerprints. An individually packaged metal cleansing cloth is included with each metal puzzle sold on Cubicdissection. Metal Puzzle Polishing Kits which contain a larger cleansing cloth and microfiber polishing towel are also available .