Simple programming allows you to number, perforate, or score individually or simultaneously. Gothic (7) wheel reverse numbering heads offer many repeat sequences: 0,1,2,3,6 and 3 drop zeros. Sheet Counter Automatic Bottom-of-Pile Friction Feed Each numbering head can be programmed individually for multiple numbering. Numbers virtually anywhere on a sheet, from lead edge and numbers within .01" of previous number. Number single sheets or crash number up to a 10 part carbonless form. Patented self inking disposable ink cartridges: no re-inking required, (approx.) 25,000 impressions per cartridge. Ink available in red or black. One year warranty on electrical and mechanical parts.