5 Sided Watch Key Mainspring Winder This is a 5 sided watch key This is used to wind clock mainsprings This key has sizes 2, 4, 6, 8 and 10 The hole sizes are 1.75, 1.60, 1.40, 1.20 and 1.
Related 5 Sided Watch Key Mainspring Winder Clockmakers Winding
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