2pcs 3mm to 5mm Brass Joint For RC With Screws Shaft Coupling Motor Connector Ideal accessories for RC Model motor, such as airplane boat model Widely used in metal, mold, mechanical drive applications 2pcs 3mm-5mm Golden Brass Shaft Coupling Coupler Motor Transmission Connector 2pcs 3mm to 5mm Brass Joint Motor Shaft Coupling Coupler Connector Package Include: 2 x Motor Shaft Coupling Connector 1 x Allen Wrench 8 x Screws