"The Drill Doctor DD500X is a professional-level drill bit sharpener that is ideal for sharpening a full range of bits, including split points and the 135 bits used in drilling hardened metals. Sharpens split-point bits and creates split-points from standard bits. U.S.A. Grit 180 diamond grit. Easy front-loading chuck Simplified alignment and sharpening procedures E-Z Align System assures correct sharpening alignment Variable Alignment lets you adjust chisel and relief angles"
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