pow-a-rak var-a-matic serv-a-rak bevel boxes direct sales sub-contract work Bevel boxes are 90 degree manual gears that can be used in conjunction with power steering gears to facilitate forward control. Examples are used with the Serv-a-rak power steering gear and the Pow-a-rak power steering gear where they are utilised in Multiple Passenger Vehicles or vans. The units provide precise control via exceptionally low levels of torsional friction giving excellent driver steering perception. This type of Bevel box is supplied to Renault Vehicle Industries of France for passenger buses.