... 1.Inch:12" -28" 2.Rubber surface treatment: graphite,teflon coating 3.Material:natural rubber and spring steel FRAMELESS WIPER BLADE ... wiper.AudiCertificationISO/TS16949:2009 CCCMercedes-BendzClassification of wiper blade armU-hook ,Bayonet ,Screw ,Side Pin wiper ... red,blue,and yellowChevroletStructurewiper arm,wiper adaptor,frame,blade,spoiler.ChryslerMaterialTPU+PP,Top garde spoilerCitroen A ...