Maintenance free - designed to eliminate the need for lubrication and maintenance , Corrosion resistant coatings cover internal and external components - will hold up in harsh environments.Occasional cleaning with mild soap and water along with light oil lubrication of pivot points will prolong peak performance and appearance , Ergonomic design - crank, release pin and integrated wheel wedge are made of strong, engineered plastic for a comfortable touch , Wide track wheel design with 1600 pounds capacity, 10 inch screw travel, 8 inch mount travel , Limited lifetime warranty