Thanks to its built in random oscillator, the Ball Bucket is a fully equipped ball machine capable of performance found in machines costing hundreds of dollars more. Since 1970, Lobster Inc. has been making ball machines built to last. The sleek design honed to perfection over the years is virtually maintenance free, and has the only two year warranty on the market. From 20 32 pounds, Lobster ball machines are the lightest available and easily fit in the trunk of your car. Pneumatic ball machines use air pressure versus wheels to propel the ball. They have fewer moving parts resulting in less breakage and downtime. Wheels eject the balls differently every time, creating inconsistent ball patterns, while regulated air pressure assures consistent ball placement. Without costly electronic components, air machines are the least expensive on the market. Pneumatic machines also provide unbeatable portability. Batteries are heavy air isn't. Oscillation select from two setting