I drilled my Storm Phaze II 50 x 4 13/16 x 45 with a hole down. This ball comes out of the box at 3000 grit abralon. First couple times out I used this ball on a pretty oily house pattern. I really liked how this ball seemed to really like the oil and dig in. This ball is defiantly special. Great mid lane control and great back end motion. This ball also really goes thru the pins like nothing ive seen. I have been able to use this ball on a few longer sport pattern with a surface change and find this ball very useful on sport patterns. This ball is a tournament and league bowlers dream.