Nokta INV40 15.5" x 14" Waterproof DD Search Coil for Invenio Metal Detector Type_Concentric Installation: Attach the coil to

Installation: Attach the coil to the Gold Monster 1000 following the manufacturer's instructions for proper alignment and connection

Tone Frequency - Yes

It's a must-have for metal detecting

Size: 15 inches x 20 inches (38 x 50 cm)

The Minelab 4

Nokta INV40 15.5" x 14" Waterproof DD Search Coil for Invenio Metal Detector Type_Concentric Installation: Attach the coil toThe Nokta INV40 15. 5" x 14" Waterproof DD Search Coil is a high performance accessory designed for the Nokta Invenio metal detector series. This large Double D (DD) coil offers superior depth and ground coverage, making it ideal for finding deeply buried targets in a variety of environments, including mineralized soils. Key Features: Size: 15. 5" x 14" (40 cm x 35 cm), providing excellent ground coverage. Waterproof: Suitable for use in wet