ERL170 24v E-Series Retract Thruster Low Profile 170kg 250mm/9.83" ID TunnelThe SRLP170 PRO is a sturdy retractable thruster suitable for cruiser racers or flat bottomed boats between 50 70 feet. With its quick deployment, 170 210 kgs of thrust, and variable speed control, all you need to worry about when docking is getting the ropes ready. Up to 50% lighter and up to 40% smaller than comparable models Industry leading runtime, brushless motor, IP rated 170kg of thrust at 21v with 395A draw