A-B Rockwell Automation 43GT-TBB25SL. Glass Fiber Optic Cable, Transmitted Beam, Glass, For use with Large Apertures, Brass, TB Threaded 5/16in, One Sensing Tip (Standard), Stainless Steel Flxbl Conduit, 500 degree F, Standard 0.9m (36 in), 36.00 EA , 3.2 mm Randomized Bundle