Description of π₯ Efficient and Powerful: Bosch HC2312 SDS Plus Bulldog Rotary for Ultimate Performance
For use with masonry fastening systems/hex sleeve drive tools. 15 percent faster (compared to S4L). Hex drive on bit fits into driver sleeve. For setting screws in concrete applications. 3.5 In. re-useable length.
I think you get what you pay for, although it cuts a hole in concrete it doesn't last as long as a Tapcon brand drill bit. If you plan to drill a lot of holes, spend extra money on a Tapcon drill bit.