The NBL, where the astronauts train, is the world's largest indoor pool. This video is part of Cool Tools show hosted by Chris Grundy . SHOW DESCRIPTION :Did you know there's a device that lets you carry a sheet of plywood with one hand? How do you use your drill for cleaning ducts or snipping sheet metal? And just what does WD-40 stand for anyway? DIY Network's Cool Tools answers these and other questions offering an insider's look at the tools you may not yet know about. Innovative new products, funky gadgets, technological advancements and improvements to old stand-bys - we take you behind-the-scenes for a look at design, development, demonstrations and testing. Stay on top of the changing tools marketplace as you see new tools in action and get tips on how to use them. If it's cool, you'll see it on DIY's Cool Tools!