Main application: the plastic lamp shade ring converter is suitable for fitting (ES/ E27) lamp shades to Bayonet Cap (BC/ B22) lamps and lampholders Material: the lampshade is made of sturdy and hard plastic which is and can maintain long service life Widely apply: the plastic lamp shade reducer rings are compatible with most and other European made lamp shades E27 to E14 Plastic lamp shade ring converters are suitable for both pendant and upright lampholders