These days, it's hard to stay competitive without using stick nailers, so most builders give plenty of thought to the purchase and maintenance of pneumatic tools. But when it comes to the fasteners we run through them, you might think, "What's the difference? Nails are nails." At the very least, the difference between nails affects the performance and reliability of the air tools used to drive them. In some cases, the strength of your structural connections and even the legality of your trade practices could be in question. With more choices than ever in collated nails, it's best to make sure you have the right nail for the job. Clipped- or Round-Head? The decision to go with clipped-head or round-head