Double End Male Thread Bolt Screw Reducer Fitting Adapter M3 M4 M5 M6 M8 M10~M16

Pitch: M3 0.5 / M4 0.7 / M5 0.8 / M6 1 / M8 1.25 / M10 1.5 / M12 1.75 / M14 2 / M16 2 / M20 2.5. Type:Double End Male Thread Bolt Screw.

eBay