Both coils in the box: The GM05 5" round handles bedrock crevices and iron-heavy ground where larger coils lose target separation

Fisher Gold Bug DP Metal Detector with 11" Elliptical Waterproof Search Coil

You still have a volume control and a compatibility switch to enable the headphones to work with various detectors

Compatibility: Minelab GPZ 7000 Metal Detector

Compatibility: Garrett Axiom

CORS Detonation 13"x14” Coil for Makro Racer Detector 5.5-inch-coil Both coils in the box:CORS Detonation 13 x 14 Search Coil with Coil Cover, Nut & Bolt, 2 Rubber Rings, Velcro Strap, and a Two Year Warranty. This waterproof coil is designed to detect medium and small targets at a depth that is unattainable for other coils. The CORS Detonation Search Coil is suited for finding coins, treasures and artifacts in any territory. Compatible with the Makro Racer and Racer 2 Metal Detector. The Search Coil used by Professionals and Serious