DT Swiss 6-Bolt Disc 12mm Thru x 148mm Bicycle Rear Hubs
About DT Swiss - Driven by the vision of becoming a worldwide known manufacturer of bicycle components, DT Swiss expanded its product range over the years. Today DT Swiss has established itself as a leading manufacturer of spokes, nipples, hubs, rims, complete wheels as well as suspension systems.
This should correspond to the type of brakes you have on the bike.
12mm Thru x 148 thru axles are often called "Boost"