10mm to .250" (6.35mm) stainless steel coupler.**Reverse Thread, use on reverse systems where the cable spins clockwise** Specs: Measures: 42mm (1.65") long x 17mm (.67") diameter. Motor shaft: 10mm motor shaft Flex cable: 6.35 (.250") flex Cable Weighs: 1.5 ounces m4 grub screw Requires:2mm hex driver.
