Standard J Hooks, Size 4" with retainer pin, High Quality steel for strength and durability. Beveled Edge provides proper cable support, cUL Listed, Double Zinc Plated for greater corrosion resistance; 50 piece / inner box. Simply45 J-Hooks provide stress-free support for all your low-voltage cabling needs. The included cable retainer pin secures and keeps the cable bundle in place during the pulling / installation process. Our all-steel construction with a burr-free design provides superior strength for a worry-free install.