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Mainspring
For Seiko 4N20-0140
1.45 x 0.115 x 360 x 13.5 mm
Height (H): 1.45mm
Thickness (T): 0.115mm
Total Length (TL): 360mm
Barrel Diameter (BD): 13.5mm
End Type: Auto
The Total Length (TL) (360mm) is selected. Return to full mainspring page here.
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