This was SO EASY to install onto the rain barrel I purchased and into my gutter.  I am not necessarily the best at power tools, but they include the drill bits needed to go into the gutter and the rain barrel, so it's easy to complete installation.  I also like the fact that it DOES work with the rain diversion for when the barrel is too full.  We've had a few days of really strong and fast rains, and the diverter does its job by pushing the water back out of the gutter as usual instead of creating a back flow or overflow on the screen top of the barrel.