6-Bolt Disc Blue 32 Hole 12mm Thru x 157mm Bicycle Rear Hubs
This should correspond to the type of brakes you have on the bike.
We define color as the main color of the item. It may have accents or highlights in other colors.
The hub drilling is the number of spoke holes. It must match your rim spoke count.
12 x 157 axles are often called "Super Boost"