Trivalent metal plating provides superior anti-corrosion and anti-seizing properties Corrugated ribs prevent flashover Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer Copper core aids in heat removal Triple seals prevent leakage Traxter & Defender HD8 & HD10 2017-2020, Commander 2017-2020, Maverick Trail 2018-2020, Maverick Sport 2019-2020 (except M-1000R), Outlander 2019-2020