1、Wide Application: Extensively used in ROV ships, underwater propellers, manned ships, etc., to better meet your needs. 2、Material: The shell is made of CNC 6061 aviation aluminum alloy with anodized surface treatment, more corrosion resistant. 3、Long Last: High quality electronic components improve the current capacity of the ESC. With water cooling, it can work longer. 4、Multiple Programming Methods: Support LCD programming card or USBLINK with PC software. 5、High Performance: Easy to program the ESC or update the firmware online, and you can also use the remote control to modify the parameters. Item Type: Electronic Speed Controller Shell Material: Aluminum Alloy Wire Material: 8AWG extra soft silicone wire Colour: Black Size: Approx. 110x69x32mm/4.3x2.7x1.3in (excluding cables and water nozzles) Water Nozzle Outer diameter: Approx. 4.9mm/0.19in (approx. 3x5mm/0.1-0.2in silicone tube is recommended nut not included) Water Nozzle Length: Approx. 10mm/0.4in Pulse Width: 1000 milliseconds-2000 milliseconds (1500 milliseconds is the median; programmable) Peak Current: 200A Application: For ROV ship, underwater propeller, manned ship, etc. 1 x Electronic Speed Controller 1 x Manual