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Introducing our high-quality Double-End Steel Clock Winding Keys, designed for use with most American clocks. We offer 9 different sizes, ranging from Size 4 to Size 12. Based on your clock’s specifications, simply choose the size that best fits. Crafted from durable, mild steel, these keys are both versatile and practical, making them an ideal tool for a wide variety of clock winding applications.
The sizes of heads as below: The small end of all keys reassure 1.95X1.95mm and the big side of clock based on your selection as bellow:
NO 4 (inside dimensions: 3.25 X 3.25 mm)
NO 5 (inside dimensions: 3.50 X 3.50 mm)
NO 6 (inside dimensions: 3.75 X 3.75 mm)
NO 7 (inside dimensions: 4.00 X 4.00 mm)
NO 8 (inside dimensions: 4.25 X 4.25 mm)
NO 9 (inside dimensions: 4.50 X 4.50 mm)
NO 10 (inside dimensions: 4.75 X 4.75 mm)
NO 11 (inside dimensions: 5.00 X 5.00 mm)
NO 12 (inside dimensions: 5.25 X 5.25 mm)
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