I used two, but counted and found there were 102 pieces. Although the package has been opened, the net weight is 500g, and as the photo shows, there's more than 500g. As a bonus, I'll include Finish Ultra Tablets. These are new and unused ^ ^ 99.9% disinfecting dishwasher power cubes, 100 pieces, economical. - Brand: Finish - Product Name: Power Cubes - Quantity: 100 pieces - Type: Dishwasher Detergent - Features: 99.9% disinfection - How to use: Put one cube in the dishwasher