Need to replace 2 of these balances have 28xhd stamped on them with the blue knife shoe.
Casey from SWISCO responded:
July 20, 2020
Hello,
This looks like our S751-29 channel balance with a 28HD spring strength option. You don't have to worry about the color of the shoe. Just make sure that the dimensions of your attachment match up to the 15-014 knife lock shoe that comes attached to the S751. Thank you!