Bosch Bulldog 18-in Alloy Steel Masonry Drill Bit for SDS-Plus Drill

Optimized brazing and hardening process for long life
15% faster (compared to S4L)
Bosch-made carbide tip is tougher and more durable under heavy loads
Proprietary Bosch hardening process results in more holes per bit
Ideal for anchoring and through-hole applications in concrete