Sold By the bag i.e., 1 Quantity = ~ 1 Pound +/- 1/10th of a pound These are pieces of pure tin (99.9%) wire, 1/2" diameter or smaller, cut to about 1/2" lengths. Each piece weighs approximately 6/10 of of ounce or 16-18 grams and 25 to 30 nuggets in a bag. Physical Information Atomic Number: 50 Relative Atomic Mass (12C=12.000): 118.71 Melting Point: 450 F Boiling Point: 4100 F Density: 7.29 Weight Lb/in3: 0.2633