The From the Anvil Small Cabinet Knob with Base Natural Smooth has a removable base and helps create a stylish look throughout the home. The overall knob size is 41mm x 32mm, the base size is 35mm and the projection is 41mm. The knobs are sold individually complete with M4 screw. Natural Smooth Cupboard knob The knob has a natural smooth finish - this is nautral cast iron, finished with a clear matt lacquer which produces a textured look and feel. This is intended for internal use only, but if used externally in an enclosed porch, it will need to be treated with maintenance wax periodically....