ZTTO Bicycle Hub Center Lock Adapter to 6 Bolt Disc Brake Boost Hub Spacer 15x100 to 15 x 110 Front Rear Washer 12x148 Thru Axle

ZTTO Center Lock to 6 Bolt Disc Brake Adapter

Use this kit you can change center lock to 6 bolt

kit1, change center lock to 6 bolt only (about 30g)
kit2, change center lock to 6 bolt and 15x100 to 15x110, (about 50g)
kit3, change center lock to 6 bolt and 12x142 to 12x148. (about 40g)