The Keywing is not designed to work with older keys commonly known as mortice lock keys and chubb keys. These older style keys often have a cylindrical shaft which is not compatible with the Keywing key turner.
We are currently producing a version of the Keywing to suit mortice keys. To be notified when it is available, please register to our Newsletter.
If you are unsure about the style of lock and key that you have, the Timpson website has a great article that outlines the two types of lock https://www.timpsonlocksmiths.co.uk/home-services/lock-fitting-and-replacement/ .