Package contentPack of 20 (16 pieces socket covers +4 key pieces), which will meet all your needs, protect children and avoid shocks High Quality Materials Made of high quality ABS, they are strong and durable, eco-friendly, odorless, non-toxic, improve durability. Easy to Install and RemoveWhen you remove the plug cover, just put the key into the keyhole, Then rotate it 90 degrees and pull it out. Child safety protectionSocket covers is made of insulating material, plug it into the socket of current, reduces the risk of children inserting their fingers or objects into the socket. Child Safety Socket CoverSocket covers perfectly adapted to standard 2-hole French sockets, properly covers the entire surface of the sockets .