FASTENERS & TOOLS | Explosion Proof, Dust Ignition Proof; Two Hub, One Plug; for Use With Threaded Metal Conduit; for Use in Wet Locations | Flat Washers Are Used to Improve Stress Distribution, and to Span Large Clearance Holes | Includes the Tools Needed to Prepare, Connect and Test Modular Cables | Rotating Cap for Optimum and Precise Control