i bought a set of alloys for my esrt off ebay and found out when i got home that the bolt holes are 2 small

the 19mm socket wont go in.
are there bolts i can get with allen key fitments on them, or smaller normall bolts? iv even tryed a 17mm socket and that still wouldnt fit in the holes of the alloy.
the normal 19mm bolt fits in the hole just!! but cant fit a socket on it.
thay were of a pug 106 with the same 4x108 fitment so i didnt think of the hole size as this is the first time iv ever noticed the holes to be to small EVER!!!!
any advice would be great
thanks diesel