lettering stamps in a  perfect size for Julie haymaker's SHRINKETS shrink plastic projects. Size is 1 /4 inch and will shrink on SHRINKETS brand Shrink plastic to just about  1/8 inch. Shrinkets shrink plastic shrinks 50  %. Use permanent Inks Do.NOT water base inks ( called Dye inks) . 
 .Use permeant inks such as Ranger Archival . Blot excess ink off of the stamp before applying it to the plastic. You what the stamped ink to be a thin layer that is dry before shrinking. If the ink is a heavy application on the shrink plastic blot it up by laying a clean piece of paper over the stamped areas and blotting up the excess.