Product Description Specifications Titanium; Valve Spring Retainer; Double; 10 deg. Lock Angle; Valve Spring Dia. 1.437 in.-1.5 in.; .7 in. x 1.065 in. x 1.43 in.; 12 pc.; Category: Engine Components>Valve Springs, Retainers Core: N LTL: N MPN: 730-12 Proposition 65: N Special Order: Y