11 Best Finish Nailers Reviews & Buying Guide 2021- best pneumatic 15 gauge finish nailer ,24/5/2021· The finish nailer included in this kit has a gauge rating of 15 gauge along with a supported nail length limit of up to 2 ½ inches. But the best part about this kit is that even though it includes 4 tools, you get a 7-year warranty with it that makes it highly reliable.Top 7 Best Finish Nailer Reviews in 2021 with Buying TipsThis is where a finish nailer comes in. This tool is designed to offer you with the precision that enables you to complete your woodworking project effortlessly. Contents [ show] 1 Choosing the best finish nailer. 1.1 DEWALT DCN660B 20V 16 Gauge 20° Finish Nailer. 1.2 Makita AF635 15 Gauge 2.5-inch Angled Finish Nailer.