The perfect solution to replace, upgrade or secure your tent to additional crossbars. Freespirit's mounting hardware kit makes installation a snap with sure grip rubber coated u-mounts that fit any style of cross bar up to 3 1/2" wide and 1 1/2" thick. Tool free installation using a star knob with built in nut. For thicker cross bars simply replace your 2" M8 hex head bolts with longer ones.