Industry Nine 6-Bolt Disc 28 hole 15mm Thru x 110mm Bicycle Front Hubs
About Industry Nine - "Industry Nine hubs are handmade in Asheville, NC"
This should correspond to the type of brakes you have on the bike.
The hub drilling is the number of spoke holes. It must match your rim spoke count.
This is hub spacing and is the width of the hub. It must match your fork specifications.