Bosch Power Tools Carbide Tipped SDS Shank Drill Bits Carbide tipped for long life in tough applications. Centric tip ensures quick starts in concrete. Wear mark alerts user when tip wears off beyond stipulated term. Bit runs cooler thanks to improved flute design. Optimized brazing and hardening process for long life. Ideal for anchoring and through-hole applications in concrete. Bosch-made carbide tip is tougher and more durable under heavy loads. Bosch hardening process results in more holes per bit Pack of 1