3.17/4/5/6/8/10/12mm Brass Rigid Motor Shaft Coupling Coupler Transmission Connector Sleeve Adapter For RC Boat Car Airplane
Please Noted:
Package include:Coupling*1+ screw*4
Size description:
1.The following 12 types, the outer diameter is 14mm, length is 22mm, use M4 machine screws for the side holes:
3.17-3.17, 4-4, 4-5, 4-6, 5-5, 5-6, 5-8, 6-6, 6-8, 7-7, 7-8, 8-8mm

2.The following 4 types, the outer diameter is 16mm, length is 22mm, use M4 machine screws for the side holes:
5-10, 6-10, 8-10, 10-10mm

3.The following 3 types, the outer diameter is 20mm, length is 22mm, use M5 machine screws for the side holes:
8-12, 10-12, 12-12mm