The Drifter utilizes No.22's new proprietary dropout, which is built around the Syntace X-12 thru-axle platform. The derailleur hanger features a breakaway bolt, allowing replacement of the hanger instead of the frame
Amazon.com : Syntace X-12 System Derailleur Hanger Screw : Bike Derailleurs : Sports & Outdoors
Syntace X-12 System Derailleur Hanger Screw: Type 2 Standard & D- Mount, 26.0mm 4051731116849 | eBay