These knobs are designed to add that subtle and elegant functional detail to your kitchen cabinets or dresser drawers. Machined from solid brass and stainless steel, the Concave Knobs are each mirror polished to highlight their simple forms and to mirror the space around them. Fingers fit in and around the knob for an especially satisfying touch with each pull. Each piece is made to last. The brass will beautifully patina with time and touch but can also be polished to maintain a consistent shine.