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Tidland Corp. (Camas, Wash.), too, has concentrated their efforts on producing a lightweight shaft that will make handling easier and reduce operator injury. Tidland invented the airshaft in 1951, said Kasey Stratton, media manager for Maxcess International—Tidland's parent company—and has been improving shaft technology ever since. The company's newest addition is the External Element GX Air Shaft, an ultra-light, low-cost shaft designed for light to medium duty applications. Available in 3 to 6˝ core sizes, the GX features a fail-safe multi-circuit air system that ensures that a loss of air in one element will not affect the expansion and performance of the other elements. If needed, expanding elements can be changed without removing the GX from the machine.