1PC Flexible plum clamp coupler D20 L30 shaft size CNC Jaw shaft coupling 4/5/6/6.35/7/8/10mm 5mm 8mm D20L30 quality couples

1PC Flexible plum clamp coupler D20 L30 shaft size CNC Jaw shaft coupling 4/5/6/6.35/7/8/10mm 5mm 8mm D20L30 quality couples

Aliexpress UK