125kHz T5577 RFID Sleutelhanger Proximity ID Token Label Herschrijfbaar (10PCS) (zwart)

I had initially ordered others that were UID changeable but they didn’t work with my orange friend, but these worked great.They also seem hardier(?) than others including my old one, so I think it will last longer and put up with the abuse being on my keychain as it gets beat up.

I finally got a product of this kind that really works it is perfect all the keys are good to read and rewrite

worked.included split rings

They work just fine, no duds, and it’s writable/readable.

These will only write 125hz frequencies. I successfully writen some awid fobs to these , but it's a hit and miss and some registered as pass written but when tested they didn't work on door. And I had to buy a better rfid reader to see if it writes the data.