The heaviest a Bowling ball can be in competition is 16lbs. If a ball is over 16lbs your scores will be forfeited. Sometimes a ball is over 16lbs before it is drilled but it has to be under 16lbs when the drilling is done. This is starting not to be a problem because many people are switching to 15lb balls.
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uhm, i think it was my laptop . =]
that would be the government's phone.
One of the most expensive harps ever sold was the "Grandjany Special" Lyon & Healy harp, which was sold for around $190,000. This harp was custom-made and featured special design elements and enhancements that added to its value.
The most expensive DVD ever sold was a special edition copy of the movie "Metropolis" from 1927, which was auctioned for $200,000 in 2005. It is considered a rare collector's item due to its limited availability and historical significance in the world of cinema.
Usually polyester; some modern balls are based on urethanes instead. Older balls were hard rubber, which is also a polymer but would not be considered "plastic" by most people. There's a more dense "core" in the ball that's made of a composite material, so the ball weighs more than a solid piece of the outside plastic would.