CM Anchor Shackle, Super Strong, 45 ton, 58 in, 34 in Pin dia, Screw Pin, 238 in Inner Length, 112 in Inner Width, 1063 in Opening, 178 in Eye Outer Size, Carbon Steel Body, Alloy Steel Pin, GalvanizedScrew Pin AnchorChain Shackles Allow Quick and Easy Removal of The Screw Pin and Can Be Useful in Applications Where The Shackle is Frequently Removed, But Not So Much in Applications Where The Pin is Subject to Torque or Twisting