Connect motor shaft: 5mm/6mm/8mm/10mm. How to choose: eg. Connect flex shaft: 6.35mm.
RC Boat Flex Coupling Stainless Steel 8*4.76mm Left/Right Flex Collet Coupler
RC Boat Flexible Shaft Coupling 4mm to 3.17mm 4mm 5mm 6mm Stainless Steel
RC Boat 6.35mm 1/4" Flexible Shaft Coupling 5mm 6mm 8mm Motor Collet Coupler
RC Boat 4.76mm 3/16 Flexible Shaft Strut Holder Bearing Mount Aluminum CNC
universal joint coupling 4mm to 4mm Stainless steel rc model boat scale 40
Universal Joint Coupling M5 / M1/4" to 4mm Stainless Steel RC Model Boat Scale
