Montessori Knobless Cylinders

I can't comment on the shipping since we bought it from the Market. The girl who helped me was very helpful because I was looking for something to help my son work on his attention skills. In the end, we chose these cylinders, and what a great decision! My son can spend ages fitting the cylinders onto each piece of cardboard, and since there are several, he can choose which one to do. Thank you so much for your advice!