It effectively drives small headed nails to desired subsurface levels. I've also used it to set large nails back into boards.Pros:1. Small and light - more convenient to store and transport than a hammer (easy to keep in a pocket).2. Much more precise application of force than a hammer (good on both small and large nails).3. Avoids leaving big dents in wood, which is common with hammer strikes.4. Very solid build quality - I feel like this thing will last a lifetime.5. Very fair and affordable price.Cons:1. Requires two hands to use, which is less convenient than a hammer.2. Only a little better at operating in tight spaces than a hammer.3. Can't strike nails as quickly as a hammer (maybe with more practice).It's worth buying.