M12 to M10 Thread Adapters Sleeve Reducing Nut, 10 Pack 12Mm Screw Conversion Nu
Size M12 x M10 x 12mm. Inside-thread size M10. External Thread: M12. Internal Thread: M10. Fastener type Reducing Nut. Instruction: All thread design body is very easy to use, just thread them into a nut or thread pipe.