These heavy-duty staples are designed for safe and secure installation of coax and CAT3/5e and CAT6/6A data cables up to 5/16-Inch (8 mm) in width. For exclusive use with Klein's Loose Cable Stapler (Cat. No. 450-100). These UL listed insulated staples are available in packs of 300. These heavy-duty staples are designed for safe and secure installation of coax and CAT3/5e and CAT6/6A data cables up to 5/16-Inch (8 mm) in width. For exclusive use with Klein's Loose Cable Stapler (Cat. No. 450-100). These UL listed insulated staples are available in packs of 300. For coax (RG59, RG6/6Q) and data (CAT3/5e/CAT6/6A) cables up to 5/16-Inch x 5/16-Inch (8 mm x 8 mm) in size These heavy-duty staples are designed for safe and secure installation of coax and CAT3/5e and CAT6/6A data cables up to 5/16-Inch (8 mm) in width. For exclusive use with Klein's Loose Cable Stapler (Cat. No. 450-100). These UL listed insulated staples are available in packs of 300.