Please help me identify
Handy Person from Pembroke Pines, FL
Oct 24, 2025 1:30 pm
Markings: 1720 BSI Bv
4 user uploaded images
2 Replies
Casey from SWISCO
Oct 28, 2025 2:04 pm
Hello,
With this combination of attachments, you could have either the 18" long S378, S380, or S385 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment.
You'll also need 1720 spring strength options for your replacement balances. Thank you and let us know if you have any other questions or concerns.
Comparison of the S378, S380 and S385 balance shoes.
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