If you've ever drilled into concrete and hit rebar, you know it can stop a regular bit in its tracks. That's where this Bosch RC2124 comes in. It's a heavy-duty SDS Plus hammer drill bit specifically designed to cut through rebar when you hit it. The carbide tip is built to handle the impact and keep on drilling, saving you from having to stop and switch to a different tool. It's a genuine Bosch bit, brand new in the package. The part number is RC2124, and the UPC is 000346387384. If you do a lot of concrete drilling, especially in reinforced structures, having a bit like this in your kit is a total game-changer. It just powers right through.