【What You Get】: 12 Pack Heavy-duty broaches with a square retaining clip allow for quick locking and extra clearance. 【Material】: Made of good quality spring steel and high-strength carbon steel for maximum endurance, zinc-plated to resist rust and corrosion for long-term durability. 【Size】: 8mm (5/16") diameter; 60 mm (2-31/64 in) usable length in diameter secures coupler locks, jack feet, hitch hooks, and more. 【Convenient and Easy to Use】: The user-friendly design allows for easy handling while maintaining effective security. Secure your equipment, machinery, trailer loads, and coupler locks, jack feet, hitch hooks, and more. 【Wide Application】: Use on farms, lawns, and gardens, trailer hitch receivers, and other applications to secure PTO attachments and accessories. Description: This safety pin is constructed of high-strength carbon steel with maximum endurance for long-term durability. The square metal retaining clip provides quick locking and extra play with a long service