All Grant piston rings are made in the U.S.A. Contain compression rings which are manufactured to precision specifications from high grade grey iron castings. This ring set has a top compression ring that is chrome plated and lapped for resistance to wear and scuffing, and faster seating. The second compression ring is a scraper ring used in the second groove. Oil rings are 3-piece circumferential style, which provide quick seating, positive oil control and long life.