Jim makes each sprinkler by hand and drills each hole to ensure each sprinkler has a beautiful spray pattern which waters an area 10 ft. to 30 ft. in diameter. We also have a feature that keeps the lawn/garden sprinkler head from blowing off the base. Our base is designed so that the sprinkler will not fall over because we use 3 threaded bolts which grab the soil. The balls are stainless steel, which don't break and won't fade. Each design features an optical illusion when spinning, but is also a beautiful sculpture. The overall height is 48". As the copper ages, a beautiful patina will emerge. Functional art at its finest! Our hummingbird feeders feature the same 4" stainless steel ball which makes it very durable. You will be proud to own or give our copper garden art as a gift.