User blog comment:Bioshock123/Make your own Big Daddy/@comment-24.47.167.93-20140205172644/@comment-6024608-20140206093734

The coil IS a long flexible chainsaw.....

Almost as bad as the Security Bots with blades on the ends of their Rotors

I got it in place of the drill ... ROTOR (with blades on ends)   -- one of the tree trimming BD models (remember they were used for general maintenance long before they were 'protectors').