The Swanson 3-1 multi-function Unitacker plastic staple gun performs in 3 different ways! This tool can work as a standard stapler a heavy duty paper stapler and also be used to attach temporary fasteners or staples that can be easily removed! Will work with JT21 staples Will staple 60 sheets of paper at one time As a temporary stapler the staple stays above the object for easy removal Furthermore the 3-1 multi-function Unitacker is made of high impact plastic construction this is an all-purpose stapler!