Threaded eyelets are built into the clamp for easy, secure mounting on non-eyeleted or smaller frames. Rack mount solution Rack mount solution With this clever little clamp you can quickly retro-fit any bike for a rear rack. Threaded eyelets are built into the clamp for easy, secure mounting on non-eyeleted or smaller frames. With this clever little clamp you can quickly retro-fit any bike for a rear rack. Threaded eyelets are built into the clamp for easy, secure mounting on non-eyeleted or smaller frames. - Features threaded eyelets for rear rack mounting solutions on unique bike frames Features threaded eyelets for rear rack mounting solutions on unique bike frames - Quick-release (QR) versions features a rubber lever grip Quick release (QR) versions features a rubber lever grip