Shimano MicroSpline HG+ 12mm Thru x 157mm 6-Bolt Disc 32 Hole Orange Bicycle Rear Hubs
12 x 157 axles are often called "Super Boost"
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.
We define color as the main color of the item. It may have accents or highlights in other colors.