Overview Reviews Product Description American Made Howard's Chromoly Retainers. Valve Lock Style: 10 Degree Valve Stem Diameter: All Retainer Material: 4140 Chromoly Valve Spring Style: Single/Dual Recommended OD Valve Spring: 1.437 - 1.550 Retainer Finish: Black Oxide Quantity: 1 Set of 16 Weight: 32 Grams Each Country Of Origin: United States See pictures for all dimensions. Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Howards Cams Howards Chromoly 10-Degree Retainers Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *