This is a nice used set of hardened steel Valve Locks from Roush Racing. These are standard 7 degree steel locks that were custom made for one of Roush Racing’s engine programs. These steel locks sell for around $55 a 8 pairs. Here you can buy them for less. If you want the best for your engine, this is your chance to pick up a really nice used set of locks at a fraction of the price. This is a great way to adapt those used NASCAR valves to your head without changing your stock type retainers. These can be used with steel or titanium valve retainers.

Here are the specs for these Valve Locks:

Consider the following benefits of these hardened steel locks:
◊ Superior Valve Stem Fit - precise .0007" interference fit
◊ No Valve Tip Stress - special design “locks” the valve stem in the proper location – below the groove
◊ Longer Life - superior fit results in less wear and extended service life
◊ 100% CNC-Machined - unparalleled surface finish and tolerances
◊ Compatible with titanium and steel valves and retainers