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Drillforce 10PCS 0.5mm-12mm Left Hand Drill Bits HSS M2 Reverse Twist Drill Bit(0.5/1.5/2/2.5/3/4/4.5/5/5.5/6/7/8/9/10/11/12mm) - AliExpress
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10.3 mm Dia. — 12 mm Shank — 156 mm Flute Length — 204 mm OAL, 12xD, 140°, nano-FIREX, 2 Flute, Coolant Thru, Round Solid Carbide Drill - ID: GD1155250103000
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