Ball: 15 lbs, 21/2-3" pin, drilled with the pin above the ring finger and the cg in line with it below the ring finger. Ball ended up with 7/8 oz finger weight, 1/8 positive side weight, 1 oz top weight. I am a tweener, with some speed (18-20 mph). Bowled with this ball in three different houses, two synthetics, one wood. If there is oil in the synthetics, and no back end, this ball will skid out (wasn't designed for that anyway). However, if there is any backend, or a wet dry shot, this ball smokes!!!!!! Lots of messengers, when I bowled straight up boards, or when I went deep. In a house that was dry left some 9s but the shot was there. In a recent tourney, house was wood, wet fronts, fresh stripped backs, left turn as soon as it hit the dry. Great ball, better price. Match it against any of the big boys balls. Give it a 9.