♥ For the necklace keychain, there is a hole on the back of the piece that the necklace or keychain is placed onto. It is a 20-24 inch adjustable corded necklace in corresponding color. For the necklace, the chain goes through the hole and is attached with a locking jump ring. For the keychain, a larger jump ring is attached and then the dangle keychain is hung from there.

♥ For the pin, there are two gold butterfly pins on the back for proper adherence and stability.

This is plated metal. As such, it is very strong and can scratch things like phone screens. Be advised, as with any metal enamel pin, that even under extreme stress it can break. 

All of my listings are shipped with tracking included!