this ball is something else. my "ole faithful" gets me out of tough situations. great on light medium or even heavy if you have a dry backend. had this baby polished up, goes way down, you'd think it'd never recover, yeah right. comes screaming back, demolishing anything in its path. on a heavier shot, my V2 clean (which rolls earlier but arcs more)skid the entire lane just hardly starting to roll. this ball, though what the heck, threw it, and it crossed over the headpin! had to throw this ball way out to keep it right of the headpin. any condition, this ball is clean through the heads and if there's a dry backend, this ball really turns the corner. dont know the specs, pin is about 1" up and 1" right of the ring finger. great beginner ball or even, better for more advanced players who need that light oil ball. recommend this as an all around ball. i'd give it a 9, because it can be a little speed sensitive with such an angular backend.