Sepcifition: Shackle 2 Sets/Shackle Hitch Receiver/Bow Shackle Black * Screw pin or Safety pin, Bow or Dee shaped shackles * Meet the requirements of U.S. Federal Specification RR-C-271 Type IVA, CLASS 2, GRADE A * Surface finish: Hot Dip Galv. / Electro Galv. / Black electrophoresis * Body forged carbon steel, and pin forged alloy steel * Proof load is 2.2 times of Working Load Limit * Ultimate breaking load is 4 times or 6 times of Working Load Limit
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