The Makita Performance Masonry TCT Drill Bits are designed for use with percussion drills on brick, block, stone, or light concrete. They feature a high-quality tungsten carbide tip, manufactured to DIN 8039 standard. With 10 sizes available, these drill bits are suitable for a variety of applications. The specifications for this particular bit are: diameter 13.0mm, overall length 150mm, and working length 85mm.