Im new to cloning nfc tags but have done alot of programming in the past with ps1 and satellite cards. I just purchased a cheap pn532 cloner and im able to read the orginal tag. I don’t have any tags to write to and just need some advise on which ones I need. Im cloning mifare tag PFM04K which I believe is an M7 tag 4K. I just need suggestions on where I can find these tags to write to. I don’t want to buy the incorrect tags. Thank you in advance to anyone that can help me with this 
Link?
Can you scan the tag and share info here?
You can obscure the UID, if you want.
Just let us know how many bytes
xx:xx:xx:xx = 4 bytes
xx:xx:xx:xx:xx:xx:xx = 7 bytes
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Looks to be 7 bytes
Hopefully thats enough info to determine ?
Those aren’t magic cards, and it’s unclear what UID length they have anyways
This is probably your best option:
Although something like these should also work:
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Im looking for a fob not a card and I know they are out there. I just don’t know which ones they are. I talked to a store that clones these fobs and he was out of stock on them and is waiting to get more from China. He told me what im looking for is an M7 fob. I told him I was doing some research on these salto fobs and they are 4k fobs with a PFM04K marking on the fob. He clones these fobs for 30-40 dollars and im sure if he had to buy these cards @ 40 dollars he would be out of business.
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I’m also sure he buys them 100 fobs at a time at least.. are you looking for 100 fobs or 1? If you just need one, I suggest paying the $40 
If you want a bulk of them, you’ll have to start learning to speak Chinese to figure out a secure stable source.
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I never noticed before, but mtools actually does have a UMC fob:
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too funny …good one 