The cutting-edge Xtreme Defense Fluid Transfer Monolithic technology is revolutionizing perceptions of self-defense bullets. Just like the Xtreme Penetrator, its progressive nose structure facilitates deep, direct penetration while generating a permanent wound cavity diameter that exceeds that of most expanding bullets. Moreover, the bullet is crafted from solid copper, capable of surmounting penetration barriers, environmentally friendly and delivers substantial tissue damage upon impact. The act of penetrating barriers such as drywall or heavy clothing before reaching the intended target doesn't yield the potentially adverse effects for Xtreme Defense that it does for conventional hollow point bullets. The crux of the matter is the nose design. The Fluid Transfer's radial flutes channel hydraulic energy inwards and as the energy is constricted, it rapidly propels outward, creating high-pressure spikes that inflict severe damage to surrounding tissue. This swift surge in fluid flow prompts cavitation and significant tissue damage comparable to the finest hollow points available. The result of Xtreme Defense is a permanent wound cavity often two to four times larger than what a flat or round nose bullet can achieve, frequently surpassing the dimensions of traditional or solid copper expanding bullets. What you receive is a self-defense bullet capable of piercing barriers without distortion or trajectory alteration, all the while producing a larger permanent wound cavity coupled with the desired 18 inches of penetration.