Fits Trodat Printy stamps 4929 4929 Typo 4729 and 4729 Typo. The ink is water based and contains no toxic substances no acid no formaldehyde and no heavy metals. The ink is hygroscopic meaning that it self regulates by absorbing the humidity of the surrounding air so that it does not dry out allowing prolonged usage. The pads are available in black blue red green and violet. Pads are also available as dual colour red and blue which are suitable for the daters 4729 and 4729 Typo only. Dry felt...