Features Simpler Testing: Just insert the pin into the target material to help the tester easily test the moisture inside and largely simplify your work. Extensive Using: Allows for extensive application in testing wood, paper, construction materials and more for installation, woodworking and more. 4 Pieces in All: There are 4pcs moisture meter probe pin in the set, and the large quantity will surely satisfy all your need for replacement. Better Material: Adopting premium iron material with chrome tin plating, the moisture meter testing probe suits perfectly for ZN‑MT01 model. Easy to Install: Comes with a compact size and a light weight as well, the dampness moisture sensor is very convenient to install in minutes. Specification: Item Type: Moisture Meter Probe Material: Iron with chrome tin plating. Application: ZN-MT01/02 Package List:4 x Moisture Meter Probe Package List 4 x Moisture Meter Probe