2 Shackles US Military Parachute Delivery System & Also Make Great Tow Hooks, extremely heavy duty, used on airborne troop parachutes in military aircraft and some cargo that was to be parachute dropped, these also make great tow hooks for 4x4 or off road driving or vehicle recovery, stamped # on one is MS70086-1 FC and stamped on the other is 51B6720 FC64, each shackle is rated at 2,000 lbs. US Military part, comes with original high grade round mounting pin with cotter pin and paracord retaining line, approx. 2.75 inches long and 1.75 inches wide, both are included with both round clevis pins, will be wrapped and boxed carefully.