Empi 8696 Black Machine In Sand Seal Stock Size Aluminum Degree Crankshaft Pulley With Holes For Air-cooled Vw Engines. Polished Finish With Sharp Screened Black Timing Marks & Numbers. This Pulley Offers Better Timing Light Accuracy When Tuning Vw Engines. ( Outer Diameter 6-3/4" ) Note: This Pulley Kit Requires Machining The Engine Case Nose For The Seal To Set In Place. Sold As Each