High quality Racing Aluminum Oil Cap! Made from Hard Aluminum to withstand basic wear and tear for long lasting durability. Super Light Weight Fully CNC Machined Aluminum. Features predrilled holes to over tighten and loosen with a screw driver, since you do not want it coming off. Each cap is engineered specifically for its application. Comes with 1 cap with resistant rubber to protect from high temperatures and brittling. Easy to Install