The SPY 11976 Flat Brass Brush Electrode provides conductive surface contact when inspecting protective coatings with a compatible holiday detector. Its flexible brass bristles follow the inspection surface to help locate pinholes, voids, and other coating discontinuities that expose the underlying conductive substrate.The four-inch flat profile is suited for inspecting pipelines, tanks, coated metal surfaces, plastic films, and other accessible areas. A compatible brush adapter or connection assembly may be required, depending on the holiday detector configuration.Specs: Brand: SPY Inspection Equipment Manufacturer: Pipeline Inspection Company Manufacturer Part Number: 11976 Product Type: Flat Brush Electrode Electrode Material: Brass Brush Width: 4 in. / 101 mm Application: Holiday Detection and Coating Inspection Compatible Equipment: SPY Holiday Detector Systems Shipping Weight: 0.5 lb Quantity: 1 Brush Electrode Holiday detector and connection accessories are not included. Switch the detector off before installing or removing an electrode.