Octura Flex Hex Coupling – 1/4-28 x .187
For coupling flexible cable to threaded nitro engine crankshaft. 9The base of the flex hex threads onto the motor output shaft – the cap tightens flex hex around the cable like a collet in a drill chuck) – Do not use with squared end cable. Do not use with solid drive shafts. If you need to connect to a solid drive shaft, use a universal.
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