Eriocactus warasii goes by a few names, including:
It has a fat, columnar appearance with spines along the ridges. It is how you picture a cactus to look when you're a child. I can produce yellow flowers with the right care.
Treat is as you would any other cactus.
Only water when it is completely dry and pop in a spot where it will get at least 4 hours of sunlight a day.
Delivered in a 8.5cm nursery pot.