Professional manufacturing, do not need to be replaced frequently,lamp shade ring collar is very safe to use. A universal replacement part for E27 lamp shade,safe and reliable, can match well with lamp shadeof various color. Features - Color: White-Material:Plastic- Size: 5.70X5.70X1.00cm/2.24X2.24X0.39in - Lamp shade ring is made of sturdy plastic material, durable, not easily deformed and last for a long time.- Wide application is wide, lampshade ring is simple to add different beautiful E27 lampshades.- Lamp shade ring is easy to install, add a lampshade to the lamp and use this ring to fix it.-Simple design and fine craftsmanship, convenient for you to replace the wornlampshade ring. - Suitable for your table lamp, floor lamp, chandelier, pendant lights, ceiling lights, vintage light. Packing list: 20 x Lamp Shade Rings