Grapplers use their hands for controlling, retaining or striking. There are several choices to grip your opponent using your hands and legs.

S grip & Gable Grips

Leg Scissors

This is a leg grip that can be used to secure a limb or a submission. In the video the limb needing to be stabilized is placed between the knees ( not the thighs) . The legs are straight and the ankles are crossed at the insteps with the toes facing in opposite directions to tighten.