8mm Valve Adjusting Screw. These are the highest quality adjusters available for a long life and consistent valve adjusting! Old adjusters often get siezed in the rocker arm a torch and vice grips will get them out but this method requires their replacement! Adjusting them regularly will ensure they are easy to move. Old adjusters also get irregular wear on the tip and adjusting the valves can be a challenge when this happens. Sold Each Beetle Type 1: 50-79 Ghia: 56-74 Bus Type 2: 50-71Valve Adjuster Fits All Aircooled VW Sold Each