This is a set of 4 aluminum double row omni wheels. They have been used on a prototype model and show a little sign of use but still have plenty of life left. This wheels come with bearing rollers and lock collars as shown in the picture.
2WD self balancing robot! This kit is a perfect plataform for learning Arduino, PID control, serial communications(Serial, I2C, SPI), PWM signals, IMU filtering, etc.
2S JST-XH Lipo Balance Silicone Wire Extension Adapter with 20CM Brand new jst-xh 2S balance extension wire for use when charging your 2S lipo batteries.