Size: the total shaft length is 23.5mm, and the thread length is approx15mm ; Please keep the hour hand and minute hand parallel when you install this clock movement kit Quality material: the movement is made of ABS material which is sturdy and durable for a long time, and the clock hands are made of quality aluminum, which is light in weight and corrosion-resistant to provide you with nice use and decorative effect Choose Your Style: Our clock hands come in modern and retro classic styles, and you can pick out the style and length of the hands that look best for clock replacement or DIY at no additional charge. Accurate Time-keeping and Sweep Movement Motor: features High precision Clock Mechanism, ensures watchmaker's accuracy; silent movement; powered by a AA battery, easy hang up Wide Application - DIY quartz wall clock replacement movement parts, suitable for repairing, replacing or making a clock,most can be applied to -, three-dimensional embroidery, craft clock, frameless draw clock, etc. Specifications Color: Black & Walnut Material: wood+aluminum Threaded Shaft Length: 15MM Overall Shaft Length: 23.5MM Second Hand Motion: Sweeping, Non ticking Battery: .5V AA Carbon battery (not included) Package Contents: 4 x Clock Movement 4 Sets x Screw Washers 4 species x Clock Hands Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.