Surly Trailer Hitch Mount Axle Nuts: Fits 10x1mm Threaded Axles or Surly Direct-Frame Mounting, Pair BT0019

These are hitch mounts are for connecting Surly Bill and Ted Trailers to any 10mm x 1mm solid axle. They replace standard locknuts. They also include threaded stubs for direct mount to Surly Troll, Ogre and ECR frames – these frames have eyelets drilled into the dropouts specifically for these mounts.