This weight set includes 2 each of 1g, 2 g, 5 g and 10 g weights, and 1 each of 20 g and 50 g weights. The set is great for math practice and activities. Details: Brass colored 10 pieces set 2 each of (1 g, 2 g, 5 g and 10 g weights), 1 each of (20 g and 50 g weights) For ages 8 and up