These are refill stickers for donuts seal stamp.  You need a donuts seal stamp holder to use this (see HERE).  Each sticker pack comes with 30 stickers, 3 designs, in the size of 14.5mm in diameter, 6mm in diameter of the hole.

* You need a holder to use these stickers.
* Each refill comes with 30 stickers.
* 3 designs, 30 sheets per design.
* Hole size: 6mm in diameter
* Sticker size: 14.5mm in diameter
* More Designs HERE.