Haul up to four bikes in your truck bed without removing any wheels Assembles quickly, with no tools required, and lockable cable included Extends from 54.5" to 66.5" without a spacer, and extends from 60.5" to 72.5" with a full-size spacer (included) System won't scratch truck paint--soft padding included to protect bike finish Can also be used away from your truck as a standalone bike rack