14x6 steel rim code HK?

I have a set of 4 14x6 painted steel rims
Two are marked HG, and two are HK

Trying to sell them and I understand the HG are are for drums
But what are the HK rims? Will these fit a car with discs?

Thanks in advance!

I know this is an old post but I am curious if you still have the HK rims? Thanks.