Wall clock movement replacement: Snap In Type Clock Accessory with No Bushing. | Young town manufactures the 12889 series in various models,makesure the existing shaft and threads before ordering and you will get the right replacement. | Applicable to cross-stitch,three-dimensional embroidery,craft clock,frameless draw clock,etc.INSTRUCTIONS - Included along with the movements. | Movement total shaft length is 8mm (5/16 inch),thread length is 4.5mm (11/64 inch). | Sweep Silent Movement：suitable for 1-2 mm ( 1/25 -5/65 inch ) thickness clock panel.