COMP Cams Lightweight Tool Steel Retainers provide the best of all valve train benefits: light weight, along with exceptional strength and wear characteristics. Approximately 33% lighter than conventional chromemoly steel retainers and only 2-4 grams heavier than titanium (depending upon application), they are made from high-grade tool steel, making them able to withstand even the most demanding race applications. * CNC-machined for consistent quality * Developed using latest FEA and CAD software * Spintron-tested to extreme RPM to prove strength is equivalent to titanium and stronger than chromemoly steel * Designed for both 7° and 10° angles PartNumber : cca1737-1 Description : Light Weight Tool Steel Valve Spring Retainers; Single Piece Title : 1737-1 Retainers, Tool Steel 26926 on Dodge V-10 California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Compatible Lock : 623-1 Diameter 1 : 1.19 Diameter 2 : 0.91 Diameter 3 : 0.645 Angle : 7° Diameter 2 : .910" Spring Diameter : 1.290" Diameter 3 : .646" Diameter 4 : N/A Stem Size : 8mm Diameter 1 : 1.190" Engine Components::Valve Springs, Retainers