Unbreakable Mainspring MS-143X
Unbreakable Mainspring MS-143X Dennison/US Standard Size (inches): 14 x 3 x 19-1/2 Metric Size: 2.30 x .21. Tongue End Type. (TON)
$16.95 in stockSKU MS-143X
White alloy unbreakable mainspring for watches, with Tongue Type end.
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