The NEL Sharp Coil is 5" round, DoubleD, and designed to search areas heavily littered with iron and other trash debris. The shape of the coil helps to separate nonferrous metal from iron. The coil is light and weighs in at 8.8 Ounces, 250 Grams with a coil cover. The coil has good sensitivity to large, medium, and especially small targets. Very easy to use and is excellent at pinpointing targets. The coil is waterproof and fully submersible, and the body is filled with epoxy resin. Additionally, a black protective coating, the same as used on marine boats, makes it possible to use the coil without a coil cover. The coil copes excellently with high and medium soil salinity. Recommended for professionals and amateurs! Includes coil cover, hardware, and Velcro cable strap. 2 Year Warranty. For use with the Minelab Sovereign and Excalibur Metal Detectors. View detailed product specifications and graphics.