RAB/IR58 Roll Air Boxer for RR1 5/8" StaplesA pneumatic corrugated box closer that uses rolls of 1000 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 RR1 5 8" leg staples but can be easily changed for use with RR1 3 4" leg staples. For use with Markwell RR1 5 8" Roll Carton Closing Staples.