Ground Bond Tester. 30 Amp 4-Wire Ground Bond Electrical Safety tester with continuity. Comes with: K-2R, Power Cord, Operating Manual, QTPro-7 45 Day Free Trial, NIST Traceable calibration certificate without data. ISO 17025 accredited calibration certificate with data and uncertainties available with purchase at reduced price with part number: ISO-CALN-V7X.