New two-color driving wheel: silver core + PU transparent 4mm thick steel plate rotating structure: mold forming: durable 304 stainless steel positioning pin: accurate positioning, light and convenient 2-inch guide flywheel: better guide effect, 2 times longer life Two-wheel one-way drive system, power doubled/steer flexible/two-wheel wear balance: forward rotation picks up the ball, reverse rotation does not return the ball There is no vacuum zone in the fairway: as soon as the ball enters the fairway Locked into the ball picking state, not easy to be pushed.