This heavy duty, self-inking, plastic framed Reiner B6K Digit Auto Numberer prints from 1 to 999999 in 4.5mm figures for organised records and filing. The stamp features a non-print leading zero option and selectable, consecutive 2x, 3x, 4x, 5x, 6x, 12x or 20x number advance. Replacement pads are available separately.