Berg's special type screws with swivel head like 911S Porsche, fit under stock VW valve covers. Often called elephant feet. Suggested for all VW engines using the standard rocker arm configuration because they decrease side load and wear of the valve guides and stems. Furthermore, they provide a completely flat contact surface to prevent stem damage often related to stock type adjusting screws. A must for all cams with over 0.400" lift at the valve and provide longer life even with a stock engine. Precision ground on the foot to provide proper contact area. Stops all stem wear normally present with regular screws. No need for lash caps when you use these.
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