You can find those punches in Amazon:

Here is the Kokuyo:

https://www.amazon.com/PN-26-Kokuyo-multi-hole-binder-22-hole/dp/B0012R4ZAG/ref=sr_1_5?crid=2FQ3PWK1D6HNP&keywords=kokuyo+punch+hole&qid=1651681758&sprefix=kokuyo+punch%2Caps%2C96&sr=8-5

And here is and off brand:

https://www.amazon.com/gp/product/B005Q5Y4EW/ref=ox_sc_saved_title_8?smid=&psc=1

I have also seen them on AliExpress but never look at them really well...