HHIP VERTEX 6" 3-JAW FRONT MOUNT LATHE CHUCK 2 SETS OF JAWS (3800-5822)

It seems nice enough. I haven't had a chance to use it, because the long M8 bolts that come with it don't fit the M10 holes in the otherwise-matching Vertex baseplate. I'm drilling them out to thread for M12 and putting in steel threaded inserts to take the M8 bolts. That's probably an issue with the baseplate, and maybe Vertex makes another one with the right holes, but how would I know that? There's no info on either product about the bolt/hole size. Based on other Vertex products I own I expect it to work well.Never mind the description, either - this would be completely unsafe as a lathe chuck!