SportMax Lite Direct Lube Chevrolet Mark IV Mechanical Roller Lifters Up to 20 grams a pair lighter (only 205g Chev SB) than competitor’s lightweight vertical bar lifters. PLUS Direct Lube High Pressure Pin Oilers at no extra cost. The lightened bodies are still ultra strong because they are made from 8620 steel. They are fitted with 9310 steel rollers on precision sorted needle bearings for reliability. Stainless steel cross bars. Black oxide finish. Made in the USA!