Large DD coil for high frequency detectors. Offers the best combination of depth and ground cover whilst giving extra sensitivity to small gold & silver etc. Fits: Tesoro Lobo supertraq, Tejon, Cibola, Vaquero, Laser Trident 1, Trident 2 & Wolftrax Gold Wolf. (coil plug has 4 pins, if your Tesoro or Laser has 4 pins it is compatable)