Thruster removal can be a struggle on an ROV.  Whether you are performing routine maintenance, troubleshooting a bad thruster, or trying to untangle the fishing line/seaweed out of a thruster, we got you covered.  No tools required.  Just press the button on the quick release and pull out the thruster.  
 
These quick releases work with Blue Robotics T-500 and T-200 thrusters.  You will find one of these on every thruster on the ROV-3000.  We love these things and hope you will too.