Heat-treated .065 wall thickness 4130 chrome moly, for use with guide plates. 25% thicker walls than a major competitor's brand. Gloss black finish. Premium one-piece pushrods for the price of competitors' 3-piece! Each end is precision formed with specified radius for optimum wear characteristics with minimal metal-to-metal friction. 16 pieces per package. Product Features:Fits Small Block Chevy Using a Crane Roller Camshaft5/16 DiameterMade from Quality 4130 Chrome Moly Material with a .065 Wall ThicknessLength Of 7.050-in. esUse with Guide Plates