A drop forged, carbon steel shackle with an eye bolt which has a metric coarse thread on one end. Please specify Ungalvanized (Black) or Galvanized shackle is required. Ungalvanized. Size: Body dia: 6mm, Opening: 11mm, Thread Bolt & Nut: M 8, Clear Length: 20mm, Pin dia: 8mm, S.W.L: 0.2ton.