This information was originally published on jiu-jitsu.net. It is made available on BJJ.Org by the express permission of featured contributor Gene "Aranha" Simco.

1. Begin by trapping your opponent's leg as shown.

2. Make a figure four (triangle) with your legs.

3. Secure your opponent's ankle as shown with the bone of your wrist in your opponent's Achilles tendon - arch back to finish.