MECCANIXITY Thread Reducing Nuts Insert M12 x 1mm Male to M10 x 1mm Fine Thread Female Adapters 15mm Long Pipe Fitting Conversion Sleeve Reducer, Pack of 5: Amazon.com: Industrial & Scientific
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 - (M10 to M12, Raw Brass, Thread Diameter: 1.0mm Pitch, Length:
Amazon.com: PATIKIL M10/M12 to M6/M8/M10 Reducing Screw, 6 Pack 15mm Long External Thread Adapter Reducer Convert Joint Hardware Double Male Thread Bolts : Industrial & Scientific
Amazon.com: Fitting Reducer Metric M12 M12X1.0 Male to M10 M10X1 Female Thread Adapter : Industrial & Scientific
Amazon.com: Spark Plug Thread Repair Tool Set, M10 x 1.0 Bolt and M12 x 1.0 Tap Auto Accessories Hardware Kit For Repairing Spark Plug Thread M10x1.0 : Automotive