Eliminate Valvetrain Flex and Parts Breakage with Moroso's Single-Bar Stud Girdles. Solid aluminum bar, with special heat treated U-bolts, clamps to the provided rocker adjusting nuts to reinforce the entire valvetrain against the damaging effects encountered when running high pressure valve springs and high lift cams. Helps maintain rocker arm settings, eliminating maintenance, yet still allows quick adjustments. Includes all adjusting nuts (.550'' wide) and hardware. Requires the use of tall valve covers and roller rocker arms.