●Blue and white  layer

●The hardness has been specially adjusted to facilitate engraving, and the chips are easy to detach

●Smooth surface, both oily and water-based stamp pad inks can be used

●The surface layer is treated with a thin blue layer, in order to have a sharp contrast between blue and white

●Advanced rubber material, professional eraser engraving board


●round  :   diameter 3.5 * height 1.2 cm --- $0.5

●Square :  4 * 3.33 *1.2cm --- $0.5