Diablo, 12 x 11116 SDSplus 2cutter carbidetipped hammer stop bit Diablo’s SDSplus 2cutter carbidetipped 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 predetermined stopping point for efficient shallow anchor installations Optimized with a unique brazing and hardening process, the carbide tips extend life and productivity, allowing users to drill fast, accurate holes Optimized for maximum performance in corded and cordless SDSplus rotary hammers