DEWALT’s #8 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.