The Delmhorst GB2 is a Gypsum Soil Block with 25 ft. Lead Wire for Soil Moisture Meters. It is made of gypsum and are cast around two stainless steel electrodes. It is manufactured in controlled conditions to ensure uniform, fast, and accurate readings of soil moisture content. The blocks are best suited for testing soil at various depths and are easy-to-use.

• Includes 25 ft. Lead Wire
• For use with Soil Moisture Meters