Product review (5 stars): Works nicely
I have a 4 inch chimney brush to clean out part of our dryer vent, but the vent goes through a bend the brush can't pass through. So I cut the aluminum vent line in our basement. Insert a dryer dock in the middle of that line, and now I can disconnect the line in seconds to complete the cleaning. I did need to buy two hose clamps to connect the newly cut ends of the line to the dock.