The speckled charm of this square antique mirror knob with a metal base will add a touch of vintage glamour to drawer fronts and other decor. 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).