Lockout Key #34557 Dexter Fits A60, A70 Brake Actuators. It’s the small bracket that fits into the side of the Brake Actuator to stop the Hydraulic Brake from engaging.

As seen in this photo.  This is one of 3 ways to allow the trailer to back up without engaging the braking system.  We sell this product and one of many others in our EZ Loader Amazon Store.  Please Follow this Link to 411MarineRecreational to purchase the below shown, item.