Dhorcas (#016) 3/16" Threaded Motor and Black 3.5" Hands, Quartz Clock Movement Kit for Replacement FAST SHIPPING... get it in 2-4 business day Total shaft length: 13mm / 1/2in. Motor size: 2 2/16" x 2 2/16" x 5/8" Threaded shaft length: 5mm / 3/16in. Quiet, smooth sweep second hand motion. Precise degree is high