Made for semiconductor equipment, packaging machinery, farm equipment, conveyers, etc, this GE non-contact interlock/position switch is basically a reed switch mounted inside a stainless steel bolt with a 6 foot flexible grey jacketed cable. Part# 128C-6N-06J. Rated 25VA N.O. contacts -maximum switching 120VAC. Bolt is M8 x 1.25 thread x 50mm long with 2 jam nuts. Actuator (magnet) not included. Brand new! Worth $36 each.