Additional Details ------------------------------ Bullet point: The Tornado is 12" long x 13" wide and is the most famous NEL search coil. It is "golden" in finding coins, treasures, and artifacts in the field of military battles in any region world-wide. The coil is DoubleD in design and is unusually light for its size and weighs in at 19.7 Ounces, 560 Grams with coil cover. Product description: The Tornado is 12" long x 13" wide and is the most famous NEL search coil. It is "golden" in finding coins, treasures, and artifacts in the field of military battles in any region world-wide. The coil is DoubleD in design and is unusually light for its size and weighs in at 19.7 Ounces, 560 Grams with coil cover. Easily search for a whole day! Working with a slow swing will maximize its ability in finding not only large and medium targets but small targets which weigh less than 1g as well. This coil is superior to a standard coil in depth by 20% with approximately 10% more ground coverage. It is recommended as a replacement for standard coils. The coil is waterproof and fully submersible, 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 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 Teknetics Omega, Gamma, Delta, Alpha, Eurotek PRO, G-2 Metal Detector. This product is manufactured by NEL Coils Ltd. This product is not endorsed, sponsored or in any other way associated with First Texas Products. Material: Resin