The RCBS Standard Scale Check Weight Set provides reliable calibration for your reloading scale to ensure precise powder measurements every time.RCBS Standard Scale Check Weight SetPrecision calibration weights for reloading scalesEnsures accurate powder charge measurementsEssential for maintaining scale precisionCompatible with RCBS and other reloading scalesEssential for serious reloaders who demand accuracy and consistency in their powder charges. Regular calibration with these check weights helps maintain optimal scale performance for safe and precise reloading.