I didn't use this container even though it came with my Vitamix. I was skeptical of it and not sure what to use it for. I didn't have the need to grind my own flour. As I was doing some food gifts for my neighbors I decided to make some salted caramel hot chocolate. To make it I needed a food processor to pulverize the hardened caramel candy. I do not have a food processor so I had to figure out what I could do. I then remembered I had this dry blade container so I got it out and used it with fear and trembling hoping that I wouldn't ruin it with what I was trying to pulverize. I started out slow and it was amazing. It did exactly what I needed it to do. I had to pulverize 4 cups of the caramel candy and it did it all. I will be using this container a lot more. Power Great power. It didn't even hesitate pulverizing what I needed it to do. Safety I love how Vitamix is very powerful yet I have never had an issue with safety. I tend to be over the top making sure things are safe. Ease of Assembly Very easy, not much to it. Ease of Cleaning Cleans up extremely easy. Durability Love this product. Vitamix products are definitely durable!!!