https://www.stapleheadquarters.com/ItemForm.aspx?Item=J561%2F15C
JK561-15 (C-58) Carton Staples, 5/8-inch leg. LF. 25,000/carton. JK Brand.
JK561-15 5/8-inch leg staples for CCC Red Line series, all Container Stapling Corp. King Size series Staplers, Duo-Fast DF-FC6C, DF-PC6C, DF-HC7C, and DF-AC8C...