High strength, rigidity and extreme wear resistance make these bushings superior to OEM equipment. Machined from solid Delrin rod - self lubricating. Delrin (not plastic) is the top material for off-road high performance applications - known for its high tensile strength, creep resistance and toughness. It exhibits low moisture absorption. It is chemically resistance to hydrocarbons, solvents and neutral chemicals. These properties, along with its fatigue endurance make Delrin ideal for many industrial applications. Contains 4 pieces. Replaces OEM # 1500103. Made in the USA.