DIY Wall Clock MechanismFrom $9.00Sale PriceColor*28mm 31mm(2pcs)14.5mm 17mm(2pcs)28mm20mm8mm 14.5mm(2pcs)17mm22.5mm 28mm(2pcs)14.5mm17mm 20mm(2pcs)31mm8mm22.5mmAdd to CartBuy NowSimply measure the width and depth of the hole of your clock and align with the measurements of the appropriate mechanism.