Bosch 8 Piece Glass and Tile Bit Set with Storage Case GT3000 PRECISION: Features Boschs unique product design with a precision tip to help solve any bit wandering or bit walking. QUALITY: This glass and tile set includes a high-quality carbide tip with a reinforced head to reduce stress, prevent bit cracking and the diamond ground cutting edges provide a longer life. VERSATILE: Perfect for common applications such as relief holes for glass cutting, bathroom and shower installs, drilling and fastening mirrors, setting concrete screws in tile and many more. RELIABLE: The three flat shank provides superior grip on large bits 5/16 in. and larger to prevent slippage. The Bosch GT2000 bit set is easy to use while still providing best-in-class speed so you can get the job done faster. INNVOATIVE: Featuring the Bosch branded, innovative geometry allows bits to drill faster. Stay organized with the Brute Tough Storage Case. Included drill bit sizes: 1/8 in., 3/16 in., 1/4 in., 5/16 in., 3/8 in., 1/2 in., 5/8 in., 3/4 in.