Mars Goliath 15” DD Waterproof Coil for Minelab X-Terra 3 kHz Detector metal-detectors The tumbling stones come in

The tumbling stones come in either red or blue

These agitator knobs move through the material in rapid succession causing it to mix and tumble

Minelab GPX 4000

Simple Bungie Adjustment - One handed operation to adjust detector distance in an instant

Mars Goliath 15” DD Waterproof Coil for Minelab X-Terra 3 kHz Detector metal-detectors The tumbling stones come inMars Goliath 15" DD Search Coil with Nut & Bolt, Coil Cover, 2 Rubber Rings, and a Two Year Warranty. The Mars Goliath coil will ensure the maximum possible target detection depth as well as a larger scan area. It is at its most efficient searching in large open areas clear of thick vegetation. Compatible with the Minelab X Terra 505 & X Terra 705 Metal Detectors. The Mars Goliath coil will ensure the maximum possible target detection depth as well as