Exploding Sphere

An Exploding Sphere is a ninja tool made from an iron ball and welded kunai blades. On its surface is a concealed explosive tag that when detonated, will release deadly shrapnel in almost every direction. The ball itself is 10" in diameter, and the blades welded all across of it add another 6", in total making it 16" in diameter. It weighs 5 lbs.