Replacement set

Thanks for posting. This looks like either an S380-27 or S385-27 Channel Balance. The only difference between these two channel balances is the depth of the bottom nylon shoe, or the measurement from 'heel' to 'toe'. See the diagram below for reference. Compare both with your old hardware to see what matches best. In either case for a new stamp option choose 2640.

Comparison of the S380 and S385 balance shoes.