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The Vehicle Mounting Extension Bolt accessory adapts the router for thicker vehicle surfaces, such as insulated bus roofs, or insulated camper shells. Each of the parts of this accessory have edge gaps that allow you to slide the fasteners onto the flat cables rather than thread them from the end.
Note: These items replace the stock fasteners that are shipped with the router.
R2100 Series 5G Ruggedized Router and Optional Accessory Quick Start Guide