Valve Spring Retainer, Steel, 7 Degree, 1.500 in. Outside Diameter, .675 in. Inside Diameter, Set of 16. Crane Cams� steel valve spring retainers are precision manufactured from high quality bar stock steel, heat treated for maximum strength and durability, and black oxided for corrosion resistance. Crane steel retainers are made for 8mm, 5/16�, 11/32�, and 3/8� valve stem diameters with 7� taper and are compatible with either Crane stamped steel or machined steel valve stem locks. 3/8� size will accommodate Crane S.D. steel locks. (All locks sold separately) NOTE pictures & specs may vary