ARB's BASE Rack mount kit for the Tacoma Ascent Truck Cap uses proven attachment methods to keep the roof rack as close as practical to the vehicle roof. BASE Rack specific blade brackets suit the 61 in (L) x 46 in (W) (PN 1770160). By incorporating a dovetail extrusion around both the full perimeter and along each edge of the internal beams, the BASE Rack provides endless mounting and attachment options. Adding, removing and repositioning accessories and roof loads is quick and easy with the BASE Rack's dovetail system, making it easier to install and remove individual items without disturbing the whole load. Plus, unlike traditional roof rack channels, the BASE Rack dovetail extrusion won't collect dust and debris. Each BASE Rack accessory or fixture attaches to the rack with a simple clamp mount, including larger hardware such as Hi-Lift Jack mounts, rollers, recovery boards and even a BASE Rack custom light bar. ;