This product can be used as an emergency steering shaft Deck Plate or for other applications such as a hatch/deck plate for inspection. As with other deck fillers from Rutgerson, it is durable and easy to use. The design with high grade stainless steel and high tech composite in black is much more corrosion resistant compared to other solutions on the market such as casted steel. Furthermore, due to the bayonet locking solution it is very quick to open compared to a traditional thread. Just turn it 90 degrees using a winch handle or a key and the lid is open.