Unbreakable Mainspring MS-122R
Unbreakable Mainspring MS-122R Dennison/US Standard Size (inches): 12 x 2 x 8-1/2 Metric Size: 2.10 x .22. Tongue End Type. (TON)
$16.95 in stockSKU MS-122R
White alloy unbreakable mainspring for watches, with Tongue Type end.
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