The Kugelhandgranate ("ball hand grenade") is the name given to a model of a hand thrown, fragmentation grenade manufactured in Germany also known as Mod. 1913.
The body of the grenade is cast iron 8 mm thick, spherical shaped and externally segmented designed to produce between 70 and 80 fragments, a bronze-like stick (which is the igniter) is introduced to the spherical body. The filling was a mixture of black powder, barium nitrate, and potassium perchlorate, and does not require a detonator. The friction igniter consist of a bronze body with a central chamber filled with black powder and supplied with a 5 or 7 second delay, the powder train was topped with a priming wire made of brass with a loop at one end and serrated on the other. The serrated portion was coated with a mixture of ground glass, manganese dioxide, and potassium chlorate.