Myth #10: Personal recreation vertical gear / descent devices are suitable for commercial applications such as ropes courses, climbing walls, and industrial applications.

Truth: Personal recreational devices, especially descenders like ATC's, smaller figure 8's, and Pirana's are sized for intermittent personal use. Smaller devices are unable to dissipate the heat, the main by-product, during use in these more demanding applications.
   Figure_8_Device  Black Diamond ATC Pirana