● FREE shipping for all additional items. ●All stamps are pre inked and can be stamped for few hundreds times before refilling. If you will use your stamp very often, 10ml refill ink can be added on the option of Design. ★★ Description ★★ ● 0.6" (15mm) diameter round stamp. Perfect size for homework, books. ● Self inking stamp. No ink pad needed. ●Random cover color. ( We may select the cover to match the ink color but not certain ) ●Non-toxic, minimal odor ●Dermatologist tested ●Re-inkable, light weight, portable and easy to use. ★★ How to add ink ★★ 1. Drop photosensitive ink on the printing surface pattern and spread it evenly 2. Stand still for about 10 minutes 3. Use a dry paper towel to wipe off excess ink on the surface and test the effect on the blank area. !!The colour of the ink will be darker just after adding it, and there may be a color difference from before adding it.