9/16″ Shackle – Premium UNIVERSAL Unattended Coupler Lock

• 360° Of ‘Solid Hardened Steel’ Patented Dual Purpose Coupler Lock

• Fits Most Couplers (1-7/8″, 2″ to 2-5/16″)

• Ballistic Grade Nylon Housing Absorbs Hammer Blows & Protects Against Weather