TFL RC Boat Parts Arneson Stringer drive

523B43：
L=170mm      H=78      D=Ø30      D1=Ø12     D2=Ø6.35                  
For single drive: Recommended propeller diameter 66–68mm
For dual drive: Recommended propeller diameter 62–64mm

Without propeller included
Integrated rudder‑fin steering design, realistic structure, pitch angle manually adjustable