Check the listing for details. COMP Cams 817-1 Performance Series Lifter, Solid Flat Tappet, Fits Ford, EA. Condition: New. Listed at 31.95 USD. COMP Cams Performance Series Solid/Mechanical Lifter with EDM Injection Technology for Small and Big Block Ford, .012" Oil Hole, Single Piece. COMP Cams Performance Series Solid/Mechanical Lifters With EDM Injection Technology are premium lifters designed specifically for high-end street and race applications. Built to extreme precision tolerances to create the most durable solid lifters available, Performance Series Lifters are engineered to handle elevated, race application valve spring pressures. Each lifter features a precision-ground crown radius and surface finish to extend high-rpm durability and promote compatibility with performance Camshafts. The .012" EDM oil hole in the lifter face increases oil flow to the lifter face to Camshaft lobe contact point.