RAB/SWC Roll Air Boxer for SWC 3/4" StaplesA pneumatic corrugated box closer that uses rolls of 1,000 staples, for securely sealing filled boxes in high volume use; effortless closing of all sizes of cartons; requires a minimum of 80 psi air. This model is factory set for SWC7437 1 3 4" leg staples but can be easily changed for use with SWC7437 3 4" leg staples. For use with Markwell SWC7437 3 4" Roll Carton Closing Staples.