CCI Pillar Post Covers add elegance and style. In addition, they can cover old and faded pillars that have been beaten up by the elements. High polished 304-grade stainless steel is the material of choice for this accessory. CCI Window Sill Trims are also made from stainless steel and provide the same function of a pillar post. Product Care; Regular vehicle cleaning of dirt, grime or salt twice a month, year round. Appling a high-quality wax to help protect and maintain the finish of the product is recommended. Use ONLY Non-Abrasive automotive wax. Use of any soap, polish or wax that contains an abrasive is detrimental and can scratch the finish leading to corrosion. Do not use harsh cleaners or chemicals that could damage the finish.Failure to keep your product clean may result in pitting and or peeling.