The Lenox Tools 20300GT300S T-Shank Carbide Grit Jig Saw Blade for Tile 3-1/2-Inch Length - 2 Pack uses abrasive cutting to cut through Ceramic Wall Tile, Fiberglass and Brick. These blades are ideal for making those small cuts to help fit tile, fiberglass and brick around fixtures. These blades are made specifically for jig saws that take T-Shanks.