The V20 is a next-generation hand-held pneumatic denailer - designed in the U.S. for versatility to address a wide range of nail sizes and processing needs. It offers features far beyond what is available from others. With the V20, you are not limited by one undersized or over sized driver that only ejects some of the nails it encounters. Instead, the V20 provides you the choice of one of three driver sizes, differing only by diameter (4 mm, 5 mm, and 6 mm) -- each specially suited for the project at hand and interchangeable in the same tool. The 6 mm (V20-60) to drive the heads of pallet nails into the stringers so you can lift off a broken deck board and replace it, the 5 mm (V20-50) as the workhorse for your deconstruction crew as it processes lumber, or the 4 mm (V20-40) for nails in sheathing or cleats in flooring, reportedly working up to 10 times faster than by hand - without marring the exposed surfaces. In other denailers, the driver blade extends beyond the end of the nose a fixed distance. In the V20, the extension length is adjustable. You can then set face nails to any desired depth, up to 3/4 of an inch (19mm). You can punch four sizes of holes through light-gage metal. The V20 is designed and built for industrial use 24/7. One customer reported at least 13 tons of nails removed with one V20 in 2013. The V20 is designed to be safe. Even when accidentally left unattended, the spring-loaded nose provides continuous protection from a moving driver blade. The tool is shipped pre-assembled with the selected driver in a plastic carry case with slots for snapping up to 3 driver/nose sets into it. Also included are an Allen wrench and driver bit for changing drivers, one extra driver o-ring, a small oil bottle, a pry bar for releasing a stuck driver, and a 24 page manual in English, Spanish, and French.