Unbreakable Mainspring MS-712K
Unbreakable Mainspring MS-712K Dennison/US Standard Size (inches): 7 x 12 x 11-1/2 Metric Size: 1.60 x .09. Tongue End Type. (TON)
$16.95 in stockSKU MS-712K
White alloy unbreakable mainspring for watches, with Tongue Type end.
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