The brass transmission joint is used for connecting the motor shaft and the hexagon wheel of airplanes, boats, robots, cars, and other RC models, it is suitable for motors, generators, RC models, metalworking, and other mechanical drive systems.

Specification
Color: Gold
Material: Brass
Thread Size: M3
Outer Diameter: 9 mm / 0.3 Inch
Length: 20mm / 0.79 Inch
Inner Diameter: 2.3mm to 4mm / 0.09 Inch to 0.16 Inch
Packing List: 4 Pcs x Shaft Coupler, 8 Pcs x Screws; 1 Pcs x Spanner

Advantages
The shaft coupling joint is made of brass Iron rust-proof and wear, resistant to corrosion, not easily oxidized, extended use, has high torque with rigidity, low inertia, and excellent sensitivity, keeping the shaft stable and secure.

Instruction
Easy to install, the motor shaft coupling connector can seamlessly connect optical shafts of different diameters.

NOTE
The rigid type does not allow eccentricity, and it must be fully adjusted shaft coupler during use.