Keeper KWA14618 Bow Shackle with Molded Isolator, 4-1/2 Ton, 3/4"Heavy Duty Bow Shackle is recommended for all Winches. The bow shackle consists of a threaded removable pin, and an "O" shaped loop at the top to take loads from many different directions. The isolator stop annoying rattles and protects your bumber. 3 4" heavy duty bow shackle Molded isolator stop annoying rattles and protects your bumber Theaded removable pin 9,500 lbs working load limit 19,000 lbs proof load 57,000 lbs ultimate break strength.