What kind of pivot lock shoe do I need to order?

Thanks for reaching out! We do not carry an exact replacement match for your existing pivot shoe but I believe our 15-046 should work well as a replacement. Take a look over the dimensions below and compare them to your shoe to confirm. 

This pivot shoe is typically used with the 26-040 3" Pivot Bar.

Alternate image for 15-046

Dimensions for 26-040