THIS IS NOT A SET, DO NOT ADD THIS TO YOUR CART AS A SET. If you do not know your nail sizes and you do not want to wait for a sizing kit, you can add a full set option to your order and you will receive 20-22 nails. The full set will come with 2 of each size. If you have multiple sets that you would like to make into full sets, you will need to add a full set option for each set in your cart.