Powernail is the industry leader for pneumatic Powernailers and Powercleats nails used in hardwood flooring installations. Po ... wernailers are used for professional installation of Tongue & Groove hardwood flooring and sub-flooring for both residential and sport floor construction. Powernail products have been the industry's standard for over 60 years. In 1946, Carl and Ed Anstett founded Powernail Company. The two brothers developed the "L" Cleat Powernail and the Model 45 Powernailer. These inventors revolutionized the hardwood flooring industry, making installations much easier than previous methods. read more