Chevy SBC 350 1.5 Ratio Aluminum Shaft Mount Roller Rocker Arm Set 100Int Offset O-ring seal and bolts are

O-ring seal and bolts are included

They are five times stronger and more ridged than stock because they are made from aircraft grade aluminum alloy

Speedmaster breathers keep your crankcase properly vented and add a little shine under the hood

They extend the life of your air filter element

Chevy SBC 350 1.5 Ratio Aluminum Shaft Mount Roller Rocker Arm Set 100Int Offset O-ring seal and bolts areSpeedmaster extruded aluminum and stainless steel shaft mount rocker system includes steel shafts with pedestals. All rockers feature large needle bearings and roller tips. For extreme high performance applications. They not only unleash horsepower, but they also lengthen valvetrain component life and reduce wear and tear on valve stem tips. These rockers are precision machined to ensure consistency and ratio accuracy and have a great looking finish.