Ortlieb Quick-Rack Seat Stay Adapter Description: The Ortlieb Quick-Rack Seat Stay Adapter is designed to securely add a seatstay rack mounting location for the Ortlieb Quick-Rack or Quick-Rack Light to a bike that is not equipped with traditional threaded fender/rack eyelets. The general design of the adapter blocks and long straps that are included with each order will allow this adapter to fit a wide range of frame tube shapes and sizes and ensures a quick and easy installation. Note: Per the manufacturer, this adapter is not suitable for use on carbon fiber frames. Features: Adapter set for attaching an Ortlieb Quick-Rack or Quick-Rack Light to a bike that is not equipped with traditional threaded fender/rack eyelets Long mounting straps allow these adaptors to fit a wide variety of frame tube shapes and sizes Includes the straps, rack attachment blocks, and other necessary hardware to complete the installation