Good material and workmanship: Chrome plated steel constructed calibration weight offers stability, corrosion resistance and low magnetic susceptibility 5kg Claibraiton Weight set includes 2pcs 2kg 2000g Calibration weight + 1pc 1kg 1000g Calibration test weight Convenient and easy use: Our 5kg Claibration weight set is a great choice for keeping your precision scale calibrated and accurate. Best choice Calibration weights for general laboratory, industrial, commercial, educational usage. Flat top allows for stacking. True 42, a small scientific and Industrial company based out of Sacramento. We take pride is offering scales and weights that meet your requeriments and budget. This 5kg weight set includes 2 pieces 2kg 2000g calibration weights and 1 piece of 1kg 1000g claibration test weight