NordWolf 12-Piece HSS Titanium Step, Countersink & Cone Drill Set. 6 x HSS titanium countersink drill bits: 6.3, 8.3, 10.4, 12.4, 16.5, 20.5 mm – 90° point, three cutting edges. Six titanium-coated countersink bits cover the most common sizes for deburring and countersinking.
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