Solid brass screw cups for a highly professional and flush finish Commonly used with brass countersunk screws for decorative finish or for panels where frequent removal and replacement may be required To fit screw diameter: 4.0, 4.2 and 4.5mm Drill hole Ø size provided is a guide only and may vary in woods with varying hardness We recommend cups are covered before gently tapping into place to avoid damage to both brass and timber