Additional Details ------------------------------ Product description: Detech 4.5" x 7" Elliptical DD Search Coil compatible with Minelab E-Trac, Safari, and Explorer metal detectors D00113 This  4.5" x 7" DD coil is a true to it's physical size, has very good coverage and depth detection.  This coil can be worked in and around, under, and in between many obstacles. It can be used for general hunting if you don't want to use the 5" or 8". Find coins, jewelry, relics, rings, etc. 4.5" x 7" size gives you the width of a 5" coil, length of an 8" coil plus added depth. It's like using two coils at the same time. Material: metal