Planet Bike Versa bike rack Oversized, 6061 tubular aluminum rod for maximum strength and stability Pre-installed stainless steel hardware for quick, hassle-free installation Includes alternate mounting stays for fit most frame sizes Adjustable upper and lower mount points for easy leveling and installation. Rear reflector/tail light mounting tab allows the use of the #3108 and #3087-2 rack brackets to mount most Planet Bike tail lights Includes disc brake compatible hardware, 8" spacing between rack legs Fits bike with disc brakes Oversized, 6061 tubular aluminum rod for maximum strength and stability Adjustable upper and lower mount points for easy leveling and installation One size fits 97% of all mountain and road/hybrid frames Pre-installed rack hardware for quick, hassle-free installation