A Plastic Tile Spacer is a small plastic tool used in the installation of ceramic or porcelain tiles. It is a small cross-shaped or T-shaped device that is inserted between tiles to maintain a consistent and even gap or spacing between the tiles during the installation process. The Plastic Tile Spacer is placed at the corners of each tile where they meet, creating an even gap that allows for grout to be applied uniformly and for the tiles to expand and contract with changes in temperature and humidity without cracking or shifting.