◆ Stainless 4 mm Flex Collect Coupler 3.17mm/ 4mm/ 5mm/ 6mm Motor Shaft. ◆ Motor shaft dia.: 3.17mm/4mm/5mm/6mm (For optional).
This product would be ideal for applications requiring a flexible shaft coupling suitable for RC boats, especially when upgrading from 4mm to 3.17mm or 5mm or 6mm shafts.
