The Blackburn Local Standard Front or Rear Rack fits most bikes! Carry up to 45 pounds of cargo with this robust rack thats width adjustable to fit most adult bikes. Its disc-brake compatible and has a built-in light clip so you can mount a Blackburn light for added visibility and night riding. Use it front or rear with just about any road or mountain bike. Its width adjustable and works fine with disc brake bikes. With the push of a button, the 2Fer can switch between a white 60 lumen front light and a red 20 lumen rear light. Holding the button for 2 seconds turns the light on and off, and pushing the button once changes modes between white solid, red solid, white flashing and red flashing. The light also remembers which mode you were last using and turns on in that mode.