Find the perfect black hardware for your space. This knob in Black Nickel finish is part of our Black line up of hardware. This Richelieu mushroom knob will add a touch of style to your kitchen or bathroom décor. A true classic! Please note that the screws included with the products are a standard size of 1 in (25 mm) length, quadrex, pan head. They will fit with most of the popular melamine thicknesses, which range between 5/8 in to 3/4 in (16 mm to 19 mm).