Five pieces of 1 cm x 4 cm pieces of mica. These industrial grade cut pieces of mica make the work of castle and house windows much easier. This amount might do a whole casket full of buildings. To use, take an exacto knife and carefully place the blade on the corner edge of the mica to split it into thinner layers. Repeat this process again for each split at least once until the mica becomes thin enough to cut easily with a pair of metal scissors. At thin layers, the mica can also be pierced with a needle without fracturing if desired.