Clock Mechanism Dimensions: 23mm/0.91in thread length, 31mm/1.22in overall shaft length. Thick shaft, second hand shaft diameter 0.86mm/0.034in; Minute hand shaft diameter 3.70mm/0.146in; Hour hand shaft diameter 5.50mm/0.217in; Thread diameter 7.60mm/0.299in. Suitable for clock board with a thickness of less than or equal to 20mm/0.79in (for reference only). Clock Hands Dimensions: Second hand, length from the mounting hole to the tip 100mm/3.94in; Minute hand, length from the mounting hole to the tip 95mm/3.74in; Hour hand, length from the mounting hole to the tip 68mm/2.68in. Suitable for clocks with a face diameter of 220mm/8.66in or more (for reference only). Universally Compatible: Second hand shaft diameter/second hand mounting hole 0.86mm/0.034in; Minute hand shaft diameter/minute hand mounting hole 3.70mm/0.146in; Hour hand shaft diameter/hour hand mounting hole 5.50mm/0.217in; Thread diameter 7.60mm/0.299in. Earth Friendly Sustainability: Keep MXDFL clock hands and motor kit organized with our included sturdy reusable packaging, ensure them protected from damage or loss, for safe and secure storage. What a sustainable choice of reusing these containers to store tools, parts, accessories, hardware and craft materials to unlock a greener future. What You Get: 3 set clock mechanism with mounting hardware protected in a reliable PET plastic jar, 8 set clock hands protected in a sturdy highly transparent PC plastic tube, guidance for use, and our friendly customer service. What You Get: 3 set clock mechanism with mounting hardware protected in a reliable PET plastic jar, 8 set clock hands protected in a sturdy highly transparent PC plastic tube, guidance for use, and our friendly customer service.