Scale check weights- you rely on your scale for safe, accurate powder charges. A quick test with RCBS scale check weights tells you if your scale is reading correctly. Scale cover for 5-0-2/5-0-5 is a soft vinyl cover that preserves your scales accuracy, sensitivity, and repeatability. Folds easily for storage, fits most RCBS scales. Scale pan - for 502,505,510 and 1010 models.