Compatible with metal detector MD3030/MD4030/MD4060.97-inch metal detector rounded search coil, moderate size offers high accuracy, easy narrow targeting and perfect for tight spaces.Light weight design, you will no fatigue even sweep it all day long.Waterproof search coil allows you to use the metal detector in beach sand and under the shallow water.Perfect for prospectors or hobby detector to find metal objects, coins or valuable gold nuggets.Specifications:Material: ABScolor: BlackPackage Contents:1 x Search CoilOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.