Bostitch STCR50191/2-4M 1/2-Inch by 7/16-Inch Heavy-Duty PowerCrown Staple (4,032 per Box) N/A Imported PFR Env HEAVY DUTY STAPLE 7/16" 1/2" Leg. 7/16" Crown. Pack of 4032. For Pc1000, H30, Pc400.