The 15 cm HOT search coil offers almost the same search performance as the 20 cm concentric round coil and is better at separating non-ferrous and precious metals from iron in the case of heavy scrapping. Our recommendation on old settlement sites when high sensitivity to small parts is expected.compatible with Lobo Supertraq, Tejon, Cibola, Cibola SE, Vaquero and Vaquero2-Germania.