Rid your engine of internal friction with PROFORM's Super-Street aluminum roller-tipped rocker arms. The race-proven cage bearing, fulcrum and roller tip not only unleash horsepower, they also lengthen valve train component life and reduce wear and tear on valve stem tips. Precision machined to insure consistency and ratio accuracy. Each rocker arm has a laser etched PROFORM "P" logo. The set includes 16 anodized aluminum roller rockers and 16 poly locks.