Check the behind the scenes section, the revision history and discussion page for additional comments on this article's title.
Sontaran Field Major Styre created a robot on Earth to help him keep the GalSec astronauts in line and to patrol the landscape and to capture anyone it encountered.
It used a form of grappling cables to incapacitate and capture humans. It was easily disabled by the Fourth Doctor's sonic screwdriver. (TV: The Sontaran Experiment)