18" 17 B balancer

Question

The balancer I have is stamped 17 B with B.S.I. initials. The balancer measures very similar to your S385-18 but does NOT have the wings

Paul · Accepted Answer

If your attachments don't have wings, then you don't have the S385-18. See our S390-18 instead. This may be it. I would also recommend the 1720 option.