Butterfly knife tattoos are a popular choice among tattoo enthusiasts who want to express their love of knives, as well as their appreciation for the intricate art of knife making. These tattoos feature a butterfly knife, which is composed of two handles connected by a blade in the middle. The blade is usually curved, and the handles often feature intricate designs. The butterfly knife is a symbol of strength and skill, and it is often associated with martial arts, military service, and the art of knife-making.