Included in this package: 1x Beast Rack System with J-Hooks for securing to trailer D-Rings. 2x Harley Type Bike Chocks CK-300 1x Extended Harley Type Bike Chock CK-E300 This system comes preconfigured to securely fasten three Harley type motorcycles to your Beast Racks system. Make sure to select a crossbar length that is appropriate for your vehicle, take measurements! Please choose a crossbar size with your order.