: High quality Stainless steel universal joint coupling. Brushless motor rc boat use. motor : 4mm. Flexible : 4mm. We will try our best to solve the issue.
Universal Joint Coupling M5 / M1/4" to 4mm Stainless Steel RC Model Boat Scale
universal joint coupling 3.18mm to 4mm Stainless steel rc model boat scale 46
Vintage OCTURA Universal Joint for 3/16 Shaft R/C Model Power Boat Fitting NOS
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Aluminum 5th wheel Coupling Hitch for Tamiya 1/14 R/C Toy Semi Truck Trailer
Dumas Boats 2013 7508 Drive Coupling Socket Assembly
