[Suitable for heavy pendant earrings] The back of the ear is designed for heavy studs and pendant earrings. Stabilize your thick pendant earrings, avoid embarrassment, and confidently display your beautiful earrings anywhere. [Hypoallergenic and comfortable] The earring backing is made of 100% hypoallergenic and -safe materials, environmentally friendly production process. [ size and easy to use] The back of the ear stud is about 0.51 x 0.35 inches (L * W). Lug size ranges from 0.030 inch to 0.040 inch. the ear post into the ear post to put it on/off, and adjust the tightness of the back of the ear as needed. Essential earring for heavy earrings and pendulous earrings [ PACKAGE] Suitable for the back of heavy earrings, 3 pairs/6 pieces in , Colour:Silver Material:Metal Package Contents: 6 x Earring 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.