Cool Scooter Wheels Black Big Scooter With One Wheel On Each Side, And U Need To Stand Driving It.. Anyone Knows What Its Called?

Black big scooter with one wheel on each side, and u need to stand driving it.. anyone knows what its called? - cool scooter wheels

IM to ask what their names, usually black, which has a wheel on each side, and I think his travel electronically or battery, just to well there in the middle, and administers itself, there is no place to sit in it . and can run through a flat surface or in the sand on the beach. I feel good, I do not know what it was called, and the price and where to buy.