THRUSTER: Get up to 6 thrusters for your boat, ROV, or other marine robotics project! Each thruster comes with two propellers, one for each direction. Pledge $100 for one, $200 for two, $300 for three, $400 for four, $500 for five, or $600 for six. Add $20 each for 20 Amp forward/reverse speed controllers.

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