The Extech MO750-P is a spare or Replacement Moisture Probe. This product is for the Extech Model MO750 Soil Moisture Meter. This probe features a durable construction and has an eight inch length.Extech delivers a wide moisture meter selection for wood, soil, and tile. Extech moisture meter models are used by woodworking professionals, disaster restoration, and water damage professionals. Models include non-invasive, “pinless” moisture measurement and pin-type probe models.