These custom made one piece retainers work with all of our valve springs (single, single with damper, or dual spring), as well as the stock OEM Springs. The retainers are heat treated to 45-50 Rockwell Hardness, then Black Oxide coated to prevent rust and corrosion. Sold in packs of twelve (12 each), locks not included.

SPECIFICATIONS
Stock: 5/16" valve stem - 7 degree - 1.365" outer diameter - 0.990" & 0.656" inner diameters. 
302: 5/16" valve stem - 7 degree - 1.365" outer diameter - 0.990" & 0.656" inner diameters. 
STY: 5/16" valve stem - 7 degree - 1.235" outer diameter - 0.915" & 0.695" inner diameters. 
Dual: 5/16" valve stem - 7 degree - 1.235" outer diameter - 0.915" & 0.695" inner diameters.