Eventually 8 or 9 of them took off on me. 1 or 2 of them might have been my fault when I first put them on but the rest had the same problem when I took them off. Went to a few local auto parts stores and they didn't even have anything to take them off. I ended up having to take the car to a shop to have the stripped lugs removed, which can be difficult with a flat tyre. horrible design and the lock key also seems to be worn out which might be why they are disassembled anyway, TRASH product