Large XP open 36x30 cm DD disc with protective cover. This disc is suitable for the ADX 100,150, 250, Adventis and G-Maxx series.
Disc (4.6 kHz) Extraordinary depth range especially for the slightly larger metal objects!
For the ultimate depth range (for militaria seekers), you can also opt for the largest drive: 38x45 (we got depth reports of 1.20 on a helmet!).