With fine workmanship, it has compact structure and long service life. High performance ensures better work efficiency Motor with unique design provides smooth operation and strong& high speed power. Type: Underwater Thruster Voltage: 12-24V Current: 20A RC Boat Accessory, Powerful, Good Replacement Notes: Propeller is semi-submersible (that is, to leave a little air for the propeller to inhale the mixed water to make a greater thrust). If you need to put the propeller in deep water, it is recommended to pass the propeller to a 12mm or so. Pipe into the air. Specification:A:Contra-Propeller Propeller/B:Positive Propeller Colour:Green Material:Plastic + Metal Package Contents: 1 x Thruster Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.