DEWALT #6 replacement drill bit and countersink makes it cost effective to replace old bits and countersinks without replacing the entire unit. This replacement bit is equipped with a multi-cutter countersink, which allows users to be confident that they'll get a superior finish every time. All of DEWALT®'s black oxide split-point drill bits are designed to minimize walking by starting to drill on contact. By helping you minimize costs and maximize quality, DEWALT® helps make sure all your projects run as efficiently as possible.