Box is 3000. Storm says to restore factory surface, on a spinner, use 500 for 30 seconds a side ( on all 4 sides) then a 3000 for 10 seconds a side (all 4 sides). This is what I do .... mine still works like new after 2 years.
If the ball is not hooking, it may be too dull. My Physix will roll out when super dull --- remember it's a nano cover .. early by nature.
