CM® Anchor Shackle, Super Strong, 3 ton, 1/2 in, 0.63 in Pin dia, Screw Pin, 1.94 in Inner Length, 1.38 in Inner Width, 0.84 in Opening, 1.34 in Eye Outer Size, Micro Alloy Steel Body, Micro Alloy Steel Pin, Self-ColoredCM® Super Strong Shackles are Carbon Type Shackles with Strength Ratings That are 17 to 50% Stronger Than Comparable Sized Carbon Shackles. as a Result, These Shackles are Designed with a 6:1 Design Factor. Anchor Shackles Can Be Side Loaded or Used For Multiple Connections. CM® M650 Super Strong Anchor Shackle, 3 ton Load, 1/2 in, 0.63 in dia Screw Pin