Additional Details ------------------------------ Material: Metal Product description: This Detech Arrow 18 x 4" DD Search Coil is designed for use with the Fisher F75, F75+ plus, F75 LTD, F70 Metal Detectors. Unlike Any Other Search Coil The Detech Arrow has an innovative design and foot print that make it unique. This rugged 18 x 4" DD search coil is both waterproof and all-terrain in construction. At just one pound 10 ounces, this coil is light weight and well balanced. Optimized for exceptional performance in extremely trashy environments. Unlocks Previously Untapped Possibilities This coil opens up previously unexplored opportunities. The arrow is noted for being exceptionally good for coin hunting, relic hunting, jewelry hunting, beach hunting, gold nugget shooting and meteorite hunting. It offers extreme sensitivity and very stable operation. The size of this coil will help you search large areas 2 to 3 times faster than a standard sized search coil. Overall, the depth range is comparable to a 4 to 8" search coil. Coin and Relic Hunting In and around old foundations and abandoned home sites, coin and relic hunters will appreciate the precision and target separation. Each sweep of the coil is designed to cover a maximum area with its unique design and size. Beach and Jewelry Hunting It is quickly becoming one of the most popular beach hunting coils as it offers stable operation and exceptional performance. The wide foot print allows you to rapidly cover large areas of beach with minimal time and effort. As a result, it is an excellent coil for finding jewelry and newly buried targets quickly and efficiently. Gold Nugget Shooting The precise pinpointing and narrow path of the Arrow is ideal for locating small gold nuggets in difficult terrain. Explore tailing piles and narrow areas that have been previously untouched by other gold prospectors. Meteorite Hunting Iron and nickel meteorites are easily located with the Arrow. The coil is ideal for searching large wide open areas with ease. Meteorites and lunar fragments .