If you are looking for practical clock winding keys, then your research is here. That's because our products can meet your needs. Made from steel material, high hardness and durability, easy to use and brings you of convenience. The clock keys are suitable for most old mechanical desk clocks and wooden clocks. Features - Color: silver. - Material: steel. - Size: 5.20X5.20X0.80cm/2.04X2.04X0.31in - Note: Suitable for 4.4mm clocks. -This winding key is made of steel material that is tough and not easily or deformed, support long time using. -Designed for old mechanical desk clocks and wooden clocks, this winding key is proper for most models. -With stable performance and high hardness, this clock winding key is easy to use and suitable for both individuals and professionals. -Small size and light weight make the clock winding key convenient to carry and won't take up much space. -Reasonable length of the clock winding key provide a comfortable grip during operation and better serve your needs. Package list: 4 x Clock Winding Keys