Made from steel material, this clock winding key is exquisitely crafted and withstand long term using. Easy to insert and remove, suitable for your clock use. Reasonable structure and excellent performance, this clock winding key can be a good choice for clock repair, serve you . Features - Color: silver. - Material: steel. - Size: 5.20X5.20X0.80cm/2.04X2.04X0.31in - Note: Suitable for 4.4mm clocks. -Crafted from steel material, this winding key features workmanship, resistant to bending and breaking. -Simple structure, light weight, the clock key is easy to insert and remove, suitable for use with your clock. -This winding key has a reasonable structure that is suitable for both personal and experienced clock maker use. -Easy to operate and comfortable to hold, this winding key saves time and efforts, bring you convenience. -Featuring a suitable length and no burrs, this clock winding key is a good choice for clock tools. Package list: 4 x Clock Winding Keys