Arrow Fastener 591189BL Genuine 5/16-Inch by 5/16-Inch Black T59 Insulated Staples, 300-Pack Arrow Fasteners 591189Bl Black T59 Insulated Staples For Rg59 Quad and Rg6, 5/16-Inch by 5/16-Inch, 300-Pack Staples Easy to Install 300 black staples per pack 5/16-inch leg length by 5/16-inch crown size Fits Arrow's T59 wiring tacker Accepts wire up to 5/16-inch in diameter Made in the USA