Amazon.com: 10pieces/lot M4/5/6 to M10, M8 to M10, M10 to M12/M14 Threaded Hollow Tube Adapter Inner Outer Threaded Coupler Conveyer Adapter - (M8 to M10, Zinc Plated, Thread Diameter: 1.0mm Pitch, Length:
Amazon.co.jp: Metric Tap Set, 6 Pieces M3 M4 M5 M6 M8 M10 HSS Hex Shank Spiral Tap Drill Bit Set, Tapping Threading Tool with Spring Punching Tool and Adapter Lever : Automotive