40mm water thruster's mounting hole -position is 25mm/29mm like 775 Brushed motor, or 3674/4074/4082/4092, it is better for brushless motor. - 40mm is suitable for boat length of 60CM - 100CM. Plastic is 4 blades.
This product would be ideal for RC jet boat enthusiasts who require compact, high-performance water jet thrusters.
