Main application: the plastic lamp shade ring converter is suitable for fitting Screw (ES/ E27) lamp shades to Bayonet Cap (BC/ B22) and lampholders : the lampshade is made of sturdy and good quality hard plastic which is durable 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 lampholders colour: white : PA6 size: 44.5x4mm Package Contents: 12 x Adapter Ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.