The Shadow Conspiracy 32- Hole 12 mm Thru x 150 mm, 12 mm Thru x 157 mm Sram-Xdr Bicycle Rear Hubs
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 frame specifications.
The cassette body type is the type of cassette and number of speeds the hub will accept.