The ball is basically the Onslaught Weightblock and it is blue and red. I have had mine for 3 series and shot 780, 762, 705. Mo is my father so I have had mine a little longer than most people. I drilled one up 3 1/2" x 5 1/4" and I am keeping it at 2000 wet sand. I drilled the other on 2 1/2" x 6" and I am keeping it shined. The two balls roll great for me and give me two different looks. If the lanes are dry or over blocked, I use my 2 1/2" and can use my 3 1/2" one on most other conditions it seems. If you have any other questions feel free to ask and I will make sure to get the answers for you.