DETROIT AXLENon-ABS 5 Lug Front Wheel Hubs & Bearings Replacement for 1999-2004 Jeep Grand Cherokee - 2pc Set

This says "4 mating bolt holes", but the pictures look just like the hubs on my 04 wj laredo 4.0 I6 with selectrac- which has 3 of the 12-point bolts. How many bolt holes are actually there, and is this an actual image of this item?

Are bolts included?

what is the origin of the part?

Do these have the wheel bearings installed already?