A spare and an all-keys-lost request differ
When a working key is available, it can help identify the current setup. If no key remains, explain that clearly. Also mention whether the car is unlocked, where it is parked and whether it can be moved.
You do not need to buy a blank or remote before calling. Ask whether the particular vehicle and key type can be supported, and what is required to arrange the work.
The metal blade is only part of the story
Some keys simply turn a mechanical lock. Others also contain an electronic element used by the vehicle. A remote can have buttons for locking the doors, and a keyless fob may be part of the starting system.
The shape of the casing alone does not establish compatibility. If you already bought a replacement, give its details before assuming it can be used. Cutting, electronic pairing and remote functions can be separate parts of a request.
Have the useful details together
Write down the year, make, model and the number of working keys you have. Describe the type of key or fob you normally use and which functions still work. Keep ownership or authorization information available.
For a leased, rented or company vehicle, check who needs to approve the work. A property or airport location also has its own access arrangements; the vehicle's location is part of planning the request.
Ask about the complete result
Before agreeing to work, ask what is included: the physical key, any necessary pairing, remote functions and testing of the agreed functions. Ask about the estimate and what could change it.
There is no promise here that every make, model or aftermarket fob can be supported. Call 614-954-8321 to discuss your specific vehicle. If the keys are simply locked inside, the automotive locksmith page is the more useful starting point.