This is a Weld in Bung for standard 14 TPI Heim Joints. A pretty good compromise in size Vs. ultimate strength so where you don't think you will need a 1.25" Rod End and a 3/4" just isn't big enough this will do the trick! These are for a 1.25" ID tube so 1.75" x .25" wall or 1.5" x .120" wall...