The Photo of the text above was printed and stamped by Elmwood Stationers staff, so it is of actual results. We found that it works great on ballpoint pen and on standard 20 lb paper; but needed a couple stamps for 24lb high quality inkjet (smooth) paper to cover information completely. The stamp alone comes in two sizes. We also sell a set that comes with the "Secure Marker", which is a chisel felt tip that blacks out information completely. Use that on Social Security numbers or bank account numbers.