Eliminator Standard Stud Girdle AFR6200Eliminator Standard Stud GirdleSuit S B Chev AFR6200 R6200 These AFR stud girdles are designed to eliminate the rocker stud flexing and associated horsepower loss that come with today's high lift cams and high pressure valve springs. They are manufactured from anodised aluminium. The AFR stud girdles will maintain valvetrain longevity throughout the engine's entire rpm range. Adjusting Nuts not included with stud girdle, must be purchased separately.