The try out keys were good quality, and made of metal. Had to use on a locked door to a room we couldn't get into. Luckily these worked. There are 7 keys in total. Alternative would have been an expensive locksmith or cutting door and replacing it which would have both been more expensive options. Decided to buy these as a cheap first try option. Make sure to try these keys in order. There are numbers on the keys which are going from 1 to 7. There are a few good videos online you can watch to show you how to use them. I would recommend these keys.