Numberer - Plastic - Self Inking. This self inking stamp has 13 number bands. The characters  measure 3.8mm high. Each band has numbers from 0 to 9 with two extra characters included: / and  -.  The ink colours available are Black, Red, Blue, Green and Purple.This numberer can only be stamped on to normal paper or cardboard. If you want to stamp on to a glossy surface then this is not the stamp for you.  To stamp on to glossy surfaces, glass or plastic, you will need to purchase a Hand Numbering stamp, a dry pad and a bottle of Quick Drying Ink.