These valve covers are perimeter bolt style and include two chrome breathers with laser etched logos, two black rubber grommets and installed baffles. The installed baffles are screwed in place to ensure no oil enters the breathers. The chrome breathers are present on both valve covers which allows for proper crankcase ventilation. In addition, these covers were designed tall enough to provide necessary clearance to accommodate aftermarket valve trains. They are manufactured and packaged in the U.S.A.