Material:There is clock movement set for DIY use, made of high-grade materials, durable and safe to use. They have good manufacturing process and have a long service life. They are easy to use, easy to install, and very suitable for helping you with the work of replacing the clock core. Features:Simple design, easy to use; Suitable for repairing, replacing or making a clock. DIY clock supplies: the complete clock movement kit is suitable for repairing or making a clock, serving as good replacements for large and thick clock frames. Details: Material: plastic and aluminum Power: 1.5V AA 1 x battery (not included) Dimensions: Case Size: Approx. 55 x 55 x 16 mm (2.2 x 2.2 x 0.63 inch) Hour hand total length: approx. 189mm (7.4in) Total length of minutes: approx. 242 mm (9.5 inches) Size from center of hole to tip: Hour hand length: approx. 175mm (6.9in) Hand Length: Approx. 230mm (9.1in) This DIY clock movement kit is exquisitely crafted, not easy to deform, sturdy and durable. The clock core's high torque design and accurate timekeeping function can easily win people's love. This practical clock movement is suitable for most clocks, so you don't have to worry about non-compatibility. The design of the clock core is simple and generous, and it can be easily matched with various clocks frame. Suitable for repairing, replacing the broken parts of a clock, or serving as good handwork material to make a clock by yourself.