Fragmentation grenade

Fragmentation grenades are metal egg shaped or baseball shaped containers containing explosives and a fuzing system. The most common form of activation is a pin with a pull-ring that&mdash;when removed&mdash;allows the release of a lever or "spoon". When the lever is released, a time fuze starts usually lasting 2 to 6 seconds depending on the type and quality of manufacture of the fuze. The grenade is then tossed, rolled, or dropped. When it detonates, the fragmentation grenade explodes projecting metal fragments in all directions. If the pin is pulled and the spoon retained by a rock or other mass, the grenade can be used as a simple booby-trap.

Col. O'Neill used two fragmentation grenades to destroy the shield generator on Apophis' Ha'tak during his initial attempt at invading Earth.