LBOk-1 is a Polish small-caliber cluster submunition designed to engage personnel, unarmored and lightly armored targets, as well as equipment and logistical assets.

The munition features an aluminum alloy body containing a large number of preformed fragmentation elements — steel balls. Approximately 250 steel spheres (6.5 mm diameter) are embedded inside the body, creating a dense fragmentation pattern upon detonation.