Amazon.com: Aluminum Center-Lock hubs to 6-Bolt Disc Brake Rotor Adapter for Converting Shimano Center-Lock hubs to fit 6-Bolts Rotors,Center-Lock Adapter for 12mm Thru-Axle Hub,fit 6 Rotors,QR compatible version : Automotive
Shimano CenterLOCK to 6-bolt rotor adapter | Non Boost to Boost Adapter - YouTube