Robalon material is salt, Age & wear resistant, lastingup to five times longer than painted steel skid shoes andup to four times longer than stainless steel or molded plastic skid shoes. & because they aren't made from steel, rust spots from old skid shoes on garage floors or scrape marks in driveways, sidewalks & patios are now a thing of the past. Unlike many OEM skid shoes, robalons are reversible which make them more cost effective than a tradition skid shoe. So lose the rust, save some money & help preserve your driveway This winter with a new set of robalons!