Rocker Arm Adjusting Nuts; Stud Girdle Adjusting Nut, (12) #4509, (4) #4509S, 3/8" Stud

• 600" Base
• Stud girdle polylocks are precision ground for minimum runout
• Tapered for extra strenth in locking areas
• High Energy™ and Magnum polylocks are best for moderate lift and spring pressure applications
• Hi-Tech™ Polylocks work well in all high end race applications