The Megger 250581 deluxe ground testing kit is a kit for conducting ground resistance tests with a Megger DET3 or DET4 series ground resistance tester (sold separately). The kit includes three color-coded test leads 8, 15, and 30m (25’, 50’, and 100’) long, two 51cm (20”) ground rods, and a padded canvas case for the instrument, leads, and rods. The 250581 is an accessory used to perform ground resistance tests with Megger DET3 and DET4 series ground resistance testers.