Victor Estima, Estima Lock/Footlock Counter To Inversion: Jiu-Jitsu Magazine, Issue #25

Victor is a true master at one of the deadliest moves we’ve ever witnessed, the Estima Lock. It is essentially a combination (in the best ways for Victor and worst ways for his opponent) of a straight ankle/foot lock and a toe hold, but with the body being able to create even more pressure than just the hands and wrist alone. In this video he demonstrates the Estima Lock when attempting to pass either the De la Riva or open guard and your opponent goes inverted to counter. From JiuJitsumagazine