A stun-staff was a sizeable close-quarters combat weapon, deriving its construction from the blueprint of ancient staves. However, unlike its predecessors, it delivered an electrical jolt upon contact with a target. Functionally and visually, these weapons bore resemblance to stun batons. Each S-EP1 security droid manufactured by Ulban Arms' was equipped with a stun staff, and the droids were recognized as highly skilled practitioners in its deployment.