2pc Brass Clock Winding Key Set - 8 Sizes

2pc Brass Clock Winding Key, 8 sizes

• 2 piece set
• For clocks with square winding shafts
• 8 arms offers more clearance and safety around delicate clock faces
• Odd sizes:
• 3mm-1/8 inch (3), External Dimension is 6.4mm
• 3.5mm-9/64 inch (5), External Dimension is 7mm
• 4mm-5/32 inch (7), External Dimension is 8mm
• 4.5mm-0.174 inch (9), External Dimension is 9mm
• Even sizes:
• 3.25mm-1/8 inch (4), External Dimension is is 6.2mm
• 3.75mm-0.14 inch (6), External Dimension is is 6.9mm
• 4.25mm-11/64 inch (8), External Dimension is is 8mm
• 4.75mm-3/16 inch (10), External Dimension is is 8.9mm
• Measurements are approximate