Exterior of a fuse bomb
Fuse bomb casings were a component used by the Ottoman Assassins to craft of bombs, which, with their metal shell, rebounded off surfaces and detonated after three seconds. Because of this, they could be aimed around corners by bouncing them off of a wall or other surface, allowing the furthest range when compared to the other casings. In terms of bomb-crafting, fuse casings could be used in conjunction with any gunpowder type or ingredient.[1]