Comp Cams Rocker Arm Nuts - 3/8 1400N-16

Comp Cams Rocker Arm Nuts - 7/16 1401N-16Rocker Arm Nut - Magnum - 7/16-20 in Thread - Steel - Zinc Oxide - Set of 16

Arp Rocker Arm Nut Kit - 3/8 (16) 300-8243Rocker Arm Nut - 3/8-24 in Thread - 0.550 in Shank Diameter - 1.200 in Long - Chromoly - Black Oxide - Aluminum Rockers - Set of 16

Arp Rocker Arm Nut Kit - 3/8 (16) 300-8241Rocker Arm Nut - 3/8-24 in Thread - 0.620 in Shank Diameter - 1.200 in Long - Chromoly - Black Oxide - Stamped Steel Rockers - Set of 16

Arp Rocker Arm Nut Kit - 3/8 (16) 300-8244Rocker Arm Nut - 3/8-24 in Thread - 0.600 in Shank Diameter - 1.200 in Long - Chromoly - Black Oxide - Aluminum Rockers - Set of 16