Bosch PTBX05 Porcelain Tile Drill Bit Set, 5 Pack:

• Optimized for drilling in hard materials – for fast, precise work in porcelain tile, marble tile, granite tile and more
• Up to 5X more life – with carbide tip optimized for ceramic tile (versus Bosch glass and tile drill bits) Edit
• Arrow-shaped head design – delivers faster drilling with less effort for reduced wear and tear on the bit
• Enhanced centering zone – provides easier, more precise handling
• Hex shank – allows for maximum torque transmission and more secure connection in the chuck
• Universal brand fit – impact-rated hex shank provides compatibility with 1/4” hex impact drill/drivers and 3-jaw chuck drill/drivers
• Set contents – five piece set includes (2) 3/16 In., (2) ¼ In., and (1) 5/16 In., diameter bits for use in a variety of applications