Dhorcas (#20) 3/16" Threaded Motor and Straight Silver 10" Hands, Quartz Clock Movement Kit and Replacement Motor 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: 3/16", For dials up to 2/16" thick Quiet, smooth sweep second hand motion. Precise degree is high