Brass handle holds your drum and arbor while winding a mainspring. The plunger then releases the barrel with spring from the winder. For left hand (counter-clockwise)winders.
- Brass handle for mainspring winding
- Use with mainspring winder
- Left handed use
- Measures 2-7/8" x 9/16"
- Swiss made
Looking for a replacement mainspring for your watch but cannot find it on our website? Email us for cost and availability and we may have it for you.