Size 4 Brass Double End Clock Key Mainspring Winding Tool For Watches, Fits 1.95mm And 3.25mm Holes, Clock Repair Accessory, Handy Pro Grade Hand Tool For Winding Small To Large Mainsprings

Size 4 Brass Double End Clock Key for Mainspring Winding
✔️ Brass double end clock key, size 4; single piece; fits 1.95 & 3.25 mm

This brass, double-ended clock key is a handy mainspring winding tool designed to fit two common hole sizes for winding small to large mainsprings in clocks and watches. It's a practical repair accessory for hobbyists and professionals.

✅ Material: Brass
✅ End sizes: 1.95 mm and 3.25 mm
✅ Size: 4
✅ Pack: 1 piece

💡 What is a clock mainspring winding tool used for in watch repair?

Handy tool for winding clock and watch mainsprings with precise grip and control.
- It prevents slipping during winding
- Works with 1.95 mm and 3.25 mm holes
- Brass double-end design resists wear

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