Set of 27 metal stamping punches, each piece has an alphabet letter on one end. Letters are in upper case, and includes A-Z and the sign "&". Each letter is approximately 3mm tall (with varying widths depending on letter). Actual stamping rods are 6mm x 6mm. Comes in a blue plastic storage case, as pictured. These handy tools can be pressed into sheet metal to produce unique stamped jewellery. To use, place your blank on a hard metal surface, then place the punch face down on your blank, and tap the end in one solid hit with a hammer. We recommend practicing beforehand. Note for postage that this set is quite weighty.