12888 CLOCK MECHANISM REPLACEMENT - upgraded 12888 silent sweep clock movement, Snap In Type Clock Accessory with No Bushing. It easily replaces your old wall clock parts and also could keep your old hands. NOTICE! We have various Different Shaft Length Quartz Clock Replacement Movement Parts: If you want to replace your old movement, carefully measure the movement shaft length. This total shaft length is 20mm(25/32 inches) Clock Movement, Clock panel thickness is suitable for 7-9 mm(0.27-0.35 inches). SUPPORT CLOCK HANDS HOLE SIZE - This DW-12888 series could support hour hands hole diameter is 5mm(0.196 inches), minuted hands hole diameter is 3.14mm(0.123 inches), and Second hands hole diameter is 0.76mm(0.03 inches). (Could support minuted hands most length is 400mm/15.7 inches). Please measure your old hands' hole diameter before buying. PACKAGE CONTENT - 20mm(25/32 inches) Upgraded Silent 12888 Clock Movement x1, Iron hook x1, Rubber Pad x1, Washer x1, Hex Nut x1. We have video explanations and clear instruction manuals. You don't have to worry about installation problems. You can also contact us at any time. We sincerely hope to bring customers a satisfactory shopping experience.