Need my tires replaced on Ford KA 2005?

I need to have my tires replaced on my ford KA, however my friend said I need a bolt or something? I have what looks like a wrench crowbar thing that came with the car when I bought it? Do I need anything else, I'm taking it to a garage, or will they have what I need? I'm so confused.

If the wheels are alloy there will be a special nut/bolt that needs a key to undo it. Have a good look in all the storage areas in the car including the spare wheel/jack area as it may be lurking there. The tyre fitters won't be able to take the wheels off without it. A Ford dealer may have the info to sell you a spare. If the wheels are steel there's no special key needed.

You need the lock bolt. They are there to secure someone from stealing your wheels.

All tire shops have ways of getting locking nuts off. They will have what you need. They have seen this before, people always lose the "key" that fits locking nuts.

All you need is the $$… They have the tools, and HOPEFULLY the know-how

If you're taking them to a garage or tire store, the only thing you will need is money.

Your car probably has a locking wheel nut on each wheel. There will be a nut like thing somewhere in the car. The garage will need this when you get the tyres done.
You need to know where it is if you ever get a flat tyre.