Probe for K7105 handheld scope

Hi,
After letting this kit sit in the loft for many years I just finished constructing it. Can I buy any old BNC connected probe for it, or is there a specific model.
The box mentions PROBE 20 as an accessory but I can’t find that anywhere in the product list on the Website.

Thanks for any advice you can offer,
Benjiboy

Any basic BNC probe will do the job.
We’d recommend PROBE60S