 SCP-555 is a metal cylinder, with rounded ends, similar to a magnet commonly fed to cattle, to prevent hardware disease. It emits a field of unknown nature, which exerts an attractive force on dead or necrotic human tissue, including hair separated from the body, corpses, shed skin cells, and, in extreme cases, the epidermal layer of the skin. This field does not tend to follow the inverse square law, and does not interact with matter or electromagnetic fields in a manner consistent with any known force. The SCP itself appears to be impervious to force, showing no response to focused heating, compression, or striking.