Hey warden. When they mention "greek" series of teknetics detectors, they mean the coil will work on either the alpha, gamma, delta or omega detectors (ones with greek names). I just bought one for my omega and took me a heap of forums to get what "greek" they were referred to. The greek series 5" dd will work great on the omega in those trashy sites. From my reading it hits about as deep as the 10" concentric.
Cheers