A Great Basic Reversal.

Here is a great basic reversal from the Guard that can be used in what I like to call a Fork. A Fork is a move that can set up a second move if the opponent successfully resists your move.
The way to set it up off this reversal is if the opponent manages to get his arm back as you are trapping it by his tricep. Imagine he gets it free and posts it on the ground creating a base so you can't reverse him.
Now you can use his resistance to set up a Kimura from the Guard.
The hand you have on the ground will grab his wrist on his basing hand and your hand that is on his tricep will continue around his tricep and grab your own wrist to finish the kimura.
Basically you will go from the move above and if it's countered will continue on to the move below.