Vintage Storm X-Factor Re-Loaded Emerald, Navy, Silver Bowling Ball - LH This is a pearl particle asymmetrical ball. The MB is in the thumb (The MB indicator doesn't appear as it was drilled out when the pro shop drilled the ball.) I'm the original owner and purchased this ball new. Ball was originally drilled for my right hand but, had I had plugged and redrilled for my left hand. Weight (15 lbs.) (Span) Middle finger: 4 5/8" (cut-to-cut) Ring finger: 4 3/4" (cut-to-cut) (Seller only ships to the 48 contiguous United States.)