Vintage Ebonite Zoom Glow Bowling Ball 6 Lbs Blue Red White Marbling CRACK READ READ - This bowling ball has a number of cracks in it. They aren't obvious but they are there. The main crack is near the thumb hole. This ball should NOT be used to bowl and I'm listing it as a decoration piece ONLY. Just over 6 lbs, gorgeous design looks like a gaseous planet. Amazing, stunning marbling.