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

3/8" Polylock Rocker Arm Nut Set (Suits: Stainless Rockers)

PRW 120031 Tall Poly Locks, 3/8 Stud, Set/16

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

Jomar 1410; Stud Girdle Adjustment Nut, 3/8, .550 OD, .844 Shank Length, 8pcs

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