Rafter support tightens your awning while camping and supports the awning roller while you're traveling. Fits all awning brands. Swing it out from the travel bracket and attach it to the awning roller. Tighten the knob and swing the lever to stretch the rafter linkage and push the roller away from the RV. Make your canopy as tight as you want (you've got a lot of leverage, so take care not to stress your canopy roller). Stores on or inside your RV! | Carefree of Colorado Rafter VI by Carefree - White