PACKAGE COMES WITH PLASTIC BOX: A rubber earring backs set include 500pcs color clear. All are packed in a clear plastic box, which is a handy box for carrying and storing earring backs easily. GOOD PRICE FOR REPLACEMENT OR SPARE: Dont worry about losing the back of your earring ever again with this set of earrings backs. This set is economical for replacing the missing backing or have a few as back up. DIY FAVORITE: The rubber backs is the best choice of DIY earring lovers, it is excellent for earring back replacement, earring making posts, earring backs, earring making supplies, earring repairing, earring making, earring replacement backs. HYPOALLERGENIC MATERIAL: High quality rubber has high resistance to rust, corrosion and tarnishing, which requires minimal maintenance. Rubber backing for earring is hypoallergenic. It does not oxidize. They are soft but stay in place and are very co EARRING BACK SIZE: It is about 5mmx5.4mm with 1mm hole size. This rubber earring backs size fits for most earrings posts. Easy to put on and off. Light weight and comfortable to wear. The color clear match with most types of earrings, no matter for e