Super Funnel (30mm OD)

I was sick of spills when filling up oil and other liquids with standard funnels that would cause a pressurised vacuum effect while filling so i designed this funnel with a centre pressure channel. This allows for air to pass through the centre of the funnel without obstructing the liquid being filled. Great for automotive or any other task that requires the use of a funnel. Funnel has a 30mm out diameter end.