.990 TI Valve Spring Retainers - 7 Degree Valve Spring Retainer - 500 Series - 7 Degree - 0.640 in OD Step - Beehive Spring - Titanium - GM LS-Series - Set of 16

1.365 TI Valve Spring Retainer - 10 Degree Valve Spring Retainer - 500 Series - 10 Degree - 1.040 in / 0.715 in OD Steps - Dual Spring - Titanium - Each

1.475 TI Valve Spring Retainers - 10 Degree Valve Spring Retainer - 500 Series - 10 Degree - 1.140 in / 0.735 in OD Steps - Dual Spring - Titanium - Set of 16

1.475 TI Valve Spring Retainer 10-Degree Valve Spring Retainer - 500 Series - 10 Degree - 1.185 in / 0.865 in / 0.635 in OD Steps - Triple Spring - Titanium - Each

1.400 TI Valve Spring Retainers - 10 Degree Valve Spring Retainer - 500 Series - 10 Degree - 1.090 in / 0.695 in OD Steps - Dual Spring - Titanium - Set of 16