COMP Cams 26925TI-KIT Beehive Valve Spring Kit with Titanium Retainers for LS Engines 1.320 inches outside diameter, .680 inches inside diameter dual valve spring 141 pounds 1.810 inches seat load and 405 pounds 1.150 inches open load capacity Kit includes 26925-16 street/strip dual valve springs, 717-16 titanium retainers, 623-16 7 degree steel valve locks, 511-16 valve seals and 4695-16 spring seats .650 inch maximum lift