Remove the metal pulls from your furniture using a screwdriver.
Wash the pulls with dish soap and water. Use steel wool to get rid of tough stains or other build up. Let the pulls dry completely.
Use 150-grit sandpaper to sand every part of the pulls. Sanding creates enough texture on the pulls for the paint to stick. After you finish thoroughly sanding, use a damp cloth or tack cloth to remove the dust created with your sandpaper.
Sit the pulls on a flat surface, such as cardboard or newspaper. If the screws in the back of your pulls are not removable, stick the ends of the screws into a piece of Styrofoam. If your screws are removable but will show once the pulls are reattached, it is still a good idea to put the screws into Styrofoam so that the tops of the screws can be painted.
Spray the pulls and screws with a clean metal primer. Hold the can approximately 12 inches away from the pulls and keep the can in constant motion as you spray from side to side. Keep in mind that a thin coat is better than a thick coat, as the primer is less likely to drip. If you have the pulls laying on their sides, wait for the primer to dry completely before you turn the pulls over to prime the other side. Let the pulls dry per the manufacturer's instructions.
Use a metallic enamel spray paint to cover the pulls and screws with a top coat. Again, use an even coat of coverage and keep the spray can in constant motion as you paint from side to side. Allow the pulls to dry for the amount of time recommended by the manufacturer. Apply a second coat if necessary.
Allow the pulls and screws to dry completely before you reattach them to the furniture.