... display Precision components Solid construction Water based ink. Self ink stamp,has a built in ink pad that automatically inks the stamp die ... actionSolid Construction has been mechanically tested to over 100,000 impression cycles.Water based ink lasts 5000s of impressions without re-inking ... .5KGS42.5X37X37.5CM,,,,,self inking stamp ,,,,self-inking stamp,,,,,self ink stamp,,, Self ink Stamp