Stainless Steel Windage Style Push Rod Tubes, Set/8These are stock style push rod tubes, only with a couple of major improvements: They are stainless steel, so they will not rust over time. The "windage" design makes them longer on the case side, so they resist oil splashing back up into them from the crankshaft rotating, or from hard cornering, off roading, etc. Ask any old school engine builder, and these will be the preferred type used for most any performance or off road engine.