I had a problem on the wall hangs a wing flap that was slightly unscrewed and that was that this component does not remain hanging on the wall when it was windy. Living in an apartment on the 2nd floor balcony, 2 solutions available to me: the scale (but at that height must trust) or a sufficiently small right angle screwdriver so I could spend my hand with the tool between the wall and the door. I opted for the latter and screwdriver has fully achieved its objective. My shutter stops when winds pick!
The product appears well made and retissant. It is of course compatible with all standard nozzles screwdrivers / screwdriver (= works perfectly with my Bosch fittings)
