Powernailer designed for 18 gauge cleats.Truly the flexible nailer, the Powernail Flex can nail down the wide variety of solid and engineered flooring found in today's market.Using the adjustable foot, you can fine-tune the nailer height according to different wood profiles. No need for extra shims and pads!The Powernail Flex is recommended for use on 3/8", 1/2" and 5/8" Tongue and Groove flooring as well as some 3/4" exotics, bamboo, and other solid or engineered wood flooring.The Powernail Flex uses an 18 gauge cleat that is less likely to split the tongue into denser, more brittle woods. It is also recommended for flooring that is a very hard species like hickory. Many of the hard exotics available today require a thinner cleat to penetrate without splitting the tongue.