Replacement of Unique Balancer

A professional from Nisshin-city, Aichi Pref., Japan says:

A customer in Japan asks me to replace a Unique balancer, "20-C-30" dated 20-09-97. The whole length is 560mm and the width is 15mm. I would like to know a correct balancer in Swisco for replacement. I can send you some photos but I cannot attach them here. So, I can send you them with a return mail.

I will send you the old Unique balancer. Thanks.

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Bob from SWISCO responded:

Thanks for contacting SWISCO. This looks like our S350-21 as you seem to have guessed; but to be sure, could you re-measure the metal channel (but not including the nylon attachments)? This should come out to 533.4 mm, or 21 inches. Let us know, thanks. 

A professional from Nisshin-city, Aichi Pref., Japan says:
It's metal is 533.4 mm length. Is it 2030 of #S350-21?
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Bob from SWISCO responded:

OK, thanks for the confirmation. All our measurements are in inches, but if that is the precise measurement in millimeters then that should come out to 21 inches. So yes, I suggest you take a look at the S350-21, with a stamp option for 2030. Double check the specifications on the product page just to be safe, and see what you think!

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