$57.99 Surebonder 55012 Heavy Duty 1/2-Inch Length Staples, Arrow T50 Type, 1250 Count 18239314362 | eBay
Power Tool Staples: Arrow 608 Wide Crown Swingline Heavy Duty 1/2-Inch Staples, 1,000-Pack
Stanley Tools TRA708T Staples 1/2 Inch Heavy Duty Box Of 1000 (076174054293-1)
