A stapler comprising a base, a cartridge in pivotal relation to the base at a cartridge pivot axis, the cartridge configured to contain at least two rows of staples and a lever arm in pivotal relation to the base at a lever pivot axis. In an embodiment, the device includes a moveable driving member for selectively positioning the driving member in driving relation to each of the at least two rows for driving staples from the at least two rows. In operation, this invention permits an individual to load a stapler with multiple sized staples. This eliminates the need to continuously load and unload different sized staples from a single row stapler.