Ferrea Valve Locks - Single K10092-1 are high-quality valve locks designed to securely hold valves in place in high-performance engines. These locks are made from durable materials and are precision machined for a perfect fit. They are suitable for use in a variety of racing and high-performance applications. These valve locks are sold individually and are compatible with a wide range of valves. They are a reliable and essential component for any high-performance engine.