Countersink Drill Bit Set 1PC/5PCS Adjustable 8mm Round Shank Woodworking Cutter. Type: Countersink Drill Bit. HEX Shank Auger Drill Bit for Wood with Quick Change 1/4 8mm-35mm Cutting Dia. 6-25mm HSS Square Hole Saw Mortise Chisel Hole Cutter Twist Drill Square Drill.
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