Yellow and Black Ceramic Cabinet knob Yellow and Black Ceramic Cabinet knob, hand painted cabinet knobs for your kitchen cabinets. 1.5" in diameter. Includes screws for installation (see below to choose your screw size). As the products are handmade, it may slightly vary in color as well as in designs from the picture. Custom Screw Size: we allow you to customize the screw size of your knob. We have the following options available: (.5"), (.75"), (1"), (1.25"), (1.5"), (1.75") and (2").