The MO290-EP is an Extension Moisture Probe with dual sharp pins. Pins measure 3.4 in.(8.5cm) long, product features a 30 in. cable length. Moisture Probe can be used with MO290-EXT probe extenders to increase the working distance of the probe up to 23 in. when 2 extenders are combined together.More detail about Mobicon-Remote Electronic Pte Ltd