SmallRig HawkLock Cage for Sony A7R V A7 IV A7S III A7R IV A 1 Style:Cage Seven right here Please note that for Seven right here wipe clean after each use How to Apply Dry Erase Dots Step 1: Clean your chosen surface with a damp cloth and dry thoroughlyStep 2: Gently peel the vinyl circle off of the white backingStep 3: Hold the mat with two hands and carefully fold each side upStep 4: Place the center fold of the circle onto the table first and then slowly release each side down one timeStep 5: Smooth thoroughly as you go to avoid air bubbles Read more TEACHERS' GOOD ASSISTANTS Built in all round protective gasket to prevent the camera from scratching When using the side lock