The Simple Penetrator is the most affordable, simple, and reliable way to make a submersible electrical connection. Simply install a Simple Penetrator on each device or enclosure and connect them with a length of polyurethane tubing (not included). Then run your wire or cable through the tubing. The barbed portion of the Simple Penetrator reliably seals to the polyurethane tubing while the O-ring seals to the surface of the device. Available in three versions: - M6, 316 stainless steel. Fits 1/4" OD X 5/32" ID and 8mm OD X 5mm ID polyurethane tubing. - M10, 316 stainless steel. Fits 1/4" OD X 5/32" ID and 8mm OD X 5mm ID polyurethane tubing. - M10, 316 stainless steel, large. Fits 8mm OD X 5mm ID and 3/8" OD X 1/4" ID polyurethane tubing. SKU: SPN-1104