... 3, Easy to operate, 4,Sufficient power Walking tractor, GD-81 walking tractor, DF-12 walking tractor,DF-15walking tractor,DF ... tractorSingle axle, dual-purpose for both traction & driveTravelling speedForwordKm/h2.01, 3.32, 5.31, 6.76, 11.18, 17.86Reverse3 ...