Dhorcas (#014) 1/2" Threaded Motor and Long 12" Hands, Quartz Clock Movement Kit for Replacement FAST SHIPPING... get it in 2-4 business day Total shaft length: 3/4 in. Motor size: 2 2/16" x 2 2/16" x 5/8" Threaded shaft length: 1/2" for up to 3/8" thick dials Quiet, smooth sweep second hand motion. Precise degree is high