The stamp designs in this box set range from \'please try harder\' to \'you\'ve got it\' which make this set ideal for rewarding pupils when they made progress from their last work. All 6 stamps are selfinking stamps which means that the ink pad is built in and there is no need for a separate ink pad. The stamp will produce thousands of clear images and replacement pads are available for when the ink pad does run out. Stamp model Trodat Printy 4933 Replacement pad product number 64933