Industry Nine 12mm Thru x 157mm 28 Hole 6-Bolt Disc Bicycle Rear Hubs
About Industry Nine - "Industry Nine hubs are handmade in Asheville, NC"
12 x 157 axles are often called "Super Boost"
The hub drilling is the number of spoke holes. It must match your rim spoke count.
This should correspond to the type of brakes you have on the bike.