PRW Rocker Arm Nut 1200315; Stud Girdle RockerLocs 3/8 in. 0.530 in. Poly-Lock

3/8" Polylock Rocker Arm Nut Set (Suits: Stud Girdle)

Speedmaster 3/8" Polylock Rocker Arm Nut Set - Suits: Stud Girdle

Proform Rocker Arm Nut 66935; 3/8 x .550 x 1 in. Poly Lock for Roller Rockers

7/16" Polylock Rocker Arm Nut Set (Suits: BBC 454 Stud Girdle)

PRW 1200316 Stud Girdle, 3/8", Short, 6 Pt, .550" Od Shank, Set