This reminds me of one of my favorite games when I was a kid- Mouse Trap!
In Japan it is for traditional nagashi soumen. You grab the noodles as they go down the cold water slide.
The pipes also break off and act as bowls to hold spices in it to place on the noodles.
8400 yen- tax included- a great deal to make dinner or lunch more exciting with the family! Small commission fee of $17 via Rinkya Stores
Pic above from a traditional restaurant
You can also purchase the real ones used via here but the Bandai one is portable, small and for home use!
Via Impress Watch
[Japan][food from japan]