This one is unusual that it has a brass threaded hole at the base that takes 8-32 thread machine screws instead of the usual wood screws to install this knob. White paint but needs another coat of white paint to hide minor flaws such as cracking, chips, stains and the like. Or paint a different color, up to you. Dimensions: 1-1/2" Diameter x 1-5/16" Tall x 1" Diameter Flat Bottom. 8-32 brass threaded insert at the bottom.