SRAM Rear derailleur hanger bolt For X7/X9/DualDrive 27 - Cycle Service Nordic US
Amazon.com: M8 Chainring Derailleur Hanger Bolt Long Version Set of 2 M8 x 12 Fasteners Compatible with Specific GT Specialized Dropouts : Industrial & Scientific
M4x8 Flat Head Derailleur Hanger Screw (5 pcs) - Elanus Parts