This Trailer Leaf Spring Shackle is used with Double Eye Trailer Springs in both single axle and tandem axle spring hanger suspensions. You would use this Spring Shackle When you are using 9/16 inch Leaf Spring Mounting Bolts. This particular Leaf Spring Shackle Link has the Following Dimensions.
4 3/8 inches Long
3 1/8 inches Center Hole to Center Hole
9/16 inch Holes