CoCud Tap and Drill Bit Set, M4 x 0.7 Thread 100mm Length Tap 4mm Drill Diameter, Metric Extra Long Machine Screw Tap & Twist Drill Kit - (Applications: for Threading Tapping), 1-Set -
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Milwaukee 48-20-8006 SDS+ Metric 4mm x 160mm 2 Cutter Rotary Hammer Bit
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