There are many different types of tools that a locksmith that is picking the lock could choice from. The key used depends on the type of lock, the locksmith abilities, and the lock picks function. There are many different types, such as; hookpick, half diamond which is used for steep and shallow angles, the snake rake, S-rake pick, and the double round pick and long double ended pick. These usually come in a traditional set all together. It is up to the locksmith to determine which is best for the job and lock that they are working with.