As a Stringvision Keypeg user, it will be important to be in possession of at least two keys. The Keypeg set comes with two, but if you lose one or two, take the time to re-order one or two more. This key is the only key that will work with Stringvision Keypeg and is made of high quality tool steel (1/8-inch square). The keyring is handy and the grip size is bigger than a standard peg handle, which increases leverage and makes it a bit easier to tune.