Yes, it can be hit with a hammer. HobNails are designed to be hammered in anywhere you’d use a small nail or screw(think: size of a medium picture hanging nail). Please see our shop “Inceptance” for the other quantity options. They can be used almost anywhere, both inside and outside the home. We're discovering more uses for them all the time, so please let us know if you think of a new one. There are a few different versions, and we plan to create several more. Please e-mail us if there’s something you’d like to have put on the end of a HobNail, and we’ll work with you to create it! We recommend using a rubber mallet for hammering, and pre-drilling using a 5/64"(2mm) bit.