These have lasted nearly two years now... no streaks, noises or any ill effects.. http://web.me.com/danielmyles/Ford_Falcon_FG_Modifications_and_Alterations,_F6_Gauges,_One_Piece_Wiper_upgrade,_Glove_Box_Rattle,_Particulate_Filter,_Video/Ford_Falcon_FG_Mods_info/Entries/2009/6/14_One_Piece_Wipers.html