Overview Reviews Product Description Valve Lock - 8 Degree - 5/16 in Valve Stem - 0.050 in More Height - Steel - Black Oxide - Set of 32 Product Videos Custom Field Product Reviews Write a Review Write a Review × Pac Racing Springs 5/16 Valve Locks 8-Deg Square Groove - Steel Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *