1) Mainspring winder for clocks
2) various sized mainspring clamps or holders
3) Sizes: 37mm, 50mm, 60mm, 75mm
4) Useful for winding Loop end Mainsprings on clocks.
5) You need to use original winding wheel, pinion and key and attach to this unit to use
6) Set of 4 Round Profile Mainspring C Clamps
7) Steel construction
8) Quantity: 1 x Mainspring winder + 1 x Set of 4 C Clamps (Round Profile)