0240 Watch Mainspring 1.10 x 0.10 x 260 (10 1/4 ")(Calibers in description)
Dimensions: 1.10 x 0.10 x 260 (10 1/4 ")
End Type: T End
Material: Swiss Made Unbreakable
Fits Calibers:
Hamiton mainspring number 2721, Hamilton mainspring winder 718502, Hamilton 989, Hamilton 989E

Description
Dimensions: 1.10 x 0.10 x 260 (10 1/4 ")
End Type: T End
Material: Swiss Made Unbreakable
Fits Calibers:
Hamiton mainspring number 2721, Hamilton mainspring winder 718502, Hamilton 989, Hamilton 989E
