This handy little repair kit comes with a mini tube of E6000 glue- the same glue i use on all my products! And three anti tarnish locking brooch backs in small, medium and large.
 
To replace a brooch back use pliers or a firm grip to remove the existing brooch back, remove remaining glue with tweezers, place a small amount of the glue onto a piece of paper and run the back of the new brooch back through the glue or apply some of the glue using a cotton ear swab, apply the brooch back into desired position and leave overnight to properly cure.