Diablos SDS-Plus 2-cutter carbide-tipped hammer stop bits provide one of the fastest and longest lasting drilling solutions on the market for concrete. Featuring a Stop Collar, these bits have a pre-determined stopping point for efficient shallow anchor installations. Optimized with a unique brazing and hardening process, the carbide tips extends life and productivity, allowing users to drill fast, accurate holes. Optimized for maximum performance in corded and cordless SDS-Plus rotary hammers.