For fully integrated solutions that minimize operating costs and improve performance, specify a Hendrickson Ready-To-Roll® (RTR®) wheel-end package. Available on all INTRAAX® and VANTRAAX® suspension systems. Hendricksons RTR packages offer an impressive choice of hubs, drums, brake chambers, slack adjusters, ABS sensors and other options.Air disc brakes are available on most INTRAAX® and VANTRAAX® suspension systems.