Bosch T3926SC 13-Inch Extension Sds-Plus for Speedcore Thin-Wall Core Bits
Bosch SDS-plus thin-wall core bits are optimized for drilling with smaller hammers. Core body range is 1-Inch up to 4-3/8-Inch with a usable cutting depth of 3-Inch. Extension plus bit beyond 8-Inch should not exceed 600 RPM.