This class of projectile is designed to break apart on impact whilst being of a construction more akin to that of an expanding bullet. Fragmenting bullets are usually constructed like the hollowpoint projectiles described above, but with deeper and larger cavities. They may also have thinner copper jackets in order to reduce their overall integrity. These bullets are typically fired at high velocities to maximize their fragmentation upon impact. In contrast to a hollowpoint which attempts to stay in one large piece retaining as much weight as possible whilst presenting the most surface area to the target, a fragmenting bullet is intended to break up into many small pieces almost instantly.