There are 4 sections in the wheel; each section has 3pcs rubber connecting each other by a 3x25mm spacer. Each section runs smoothly on the wheel hub. It uses high quality rubber; which ensures long life with strong wearing capacity. Good friction on each side of the wheel.
Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor.
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.