Feature●16 per package●Package Dimension : 4.826 centimeters L x 7.62 centimeters W x 5.334 centimeters H●Fits most extruded aluminum rocker arms●Country of Origin: UNITED STATESDescription Proform poly locks for roller-rocker arms with 7/16" studs. Fits most extruded aluminum rocker arms, 16 per package.