When used in conjunction with the DML2000 Magnetic Locator, the Mag Snake allows you to locate any Septic tank, including plastic tanks, buried up to 9 feet deep. The revolutionary Mag Snake comes equipped with a magnetic header that allows you to trace underground pipe and locate any Septic Tank; concrete or plastic.

• The Mag Snake consists of an extremely powerful permanent magnet welded to the end of a durable stainless steel fish tape.
• Available in 100 or 200 foot lengths.

For more info click the link below:
 http://www.magneticlocator.com/original/mag_snake.htm