I would never start a video with a cardboard piece already cut out.But it is easy enough to see what is happening.The paper circles (only 2) could be milk shakes straws.Filters are found everywhere.Easy .to put together.Keep in a plastic pencil or crayon box or your 15 minute project is crushed.I only deducted 1 star as I wished the video was not rushed through as fast and even though I have spent about $100 on a trick deck before,the material which is minimum can still be $10 minimum after the price of information is bought.A little high but still easy enough to be usable.