When you need to put balls in hopper, it helps to have a pod or tube. This is that, and it does its job like any good pod should do. It is cheap, plastic and see through. This tube is a good buy, unless you want a some fancier expensiver tube that does a better job of putting balls in somehow.
If you want a cheap, inexpensive tube, then get it or one of the many other cheap tubes just like it. There is probably better tubes out there, but this one works fine.