The product is a set of 7 OEM engine core expansion plugs for GM vehicles, including models such as the 01-05 Suburban, Yukon, and 06-16 Savana. The parts are manufactured by GM in Japan and come with a California Prop 65 warning due to potential cancer and reproductive harm. These expansion plugs are specific to the listed vehicle models and are not universal fitment, meaning they are designed to properly seal and expand the engine core. It is essential for maintaining the engine's performance and ensuring a secure seal to prevent leaks. Exact item set is shown. New old stock with original packaging in fair condition. 1.125 inch outer diameter. Set weight 4 oz. Made in Japan. No returns on installed items or partial sets. Please review our business policies in our store for information regarding returns, shipping and warranties.