Bender Cable Boss Staples. Barbed leg design for superior holding power. Superior quality at affordable prices. Gardner Bender Cable Boss Staples. Barbed leg design for superior holding power. Superior quality at affordable prices.From the ManufacturerGardner bender Cable Boss Staples. Barbed leg design for superior holding power. Superior quality at affordable prices. Secures: voice/data: cat 5E, speaker wire: 16/2, 16/4, 12/2 (standard and in wall styles), security wire: 18/4 | Barbed legs: 2 barbs for superior holding strength in wood | Specially designed for cable boss staple gun (msg-501 & msg-501b) | Secures: round & flat cable | Unique staple design | Cable Boss Staples | Superior quality at an affordable price | Barbed leg design for superior holding power