This is a vintage Brunswick Avalanche Blue/Silver Pearl bowling ball, weighing 16 lbs. It is made of urethane material with a reactive resin coverstock and a symmetrical core. The ball is new and comes in its original box. It is suitable for any lane condition and is designed for high performance. The ball is undrilled and can be customized according to the buyer's preference. It is a ten-pin bowling ball and is perfect for bowling enthusiasts. If you have any questions please send me a message.