This is the waterproof inspection LT2 Robot. It has flipper arms to help it climb obstacles and for better maneuverability. It is capable of wireless or tethered control. The tethered option includes a fiber-optic cable spool up to 1km long.
pack of 2, 12mm Hex wheel adapter for 6mm shaft
light-weight aluminum shaft adapters convert a typical motor output shaft into a 12 mm hex shaft that is compatible with many RC wheels.