A box contains a minimum of 40 wafers. Wafers are 3/16" thick. They adapt to the dental arch for a precise check bite. Aluwax is a sophisticated composite material which contains powdered aluminum...to increase the integrity of the compound and provide the heat retention properties needed for efficient modeling. Frankly, we've found that other materials, such as copper-based waxes, just don't retain heat as long... and begin to harden too quickly.