Supertech B/H/K/F Series Titanium Retainer SetSupertech titanium retainers are manufactured from high quality, military certified, 6AL4V titanium alloy and CNC machined for a precise fit that will ensure long term durability and many race hours of use. Supertech titanium retainers help to prevent valve float and strengthen your valvetrain while being featherweight. They can handle a maximum net lift of 15. 10mm. Coil bind is measured at 24. 7mm and seat pressure was measured at 10. 51lbs. per