8 New American Double End Clock Keys

This is a new set of 8 double end keys for winding clocks. Each key is steel, plated with nickel.

The sizes are:

• Size 4, the small hole measures 1.75 mm and the large hole measures 3.25 mm
• Size 4A, the small hole measures 1.95 mm and the large hole measures 3.25 mm
• Size 5, the small hole measures 1.75 mm and the large hole measures 3.5 mm
• Size 5A, the small hole measures 1.95 mm and the large hole measures 3.5 mm
• Size 6, the small hole measures 1.75 mm and the large hole measures 3.75 mm
• Size 7, the small hole measures 1.75 mm and the large hole measures 4 mm
• Size 7A, the small hole measures 1.95 mm and the large hole measures 4 mm
• Size 8, the small hole measures 1.75 mm and the large hole measures 4.25 mm