Predator 460 stump grinder with brand new YUASA battery, brand new tyres and just had a professional engine refurb and service. (Cylinder walls honed, engine rebuilt with new crankshaft, new connecting rods, new piston rings, governor, gaskets & seals). It runs better now than when we bought it - over £1500 spent on the reconditioning. It has had the multistep conversion (comes with 2 sets of multi tip teeth and the fixed teeth and carriers). 2017 model, 25hp Kohler engine, has electric drive to the wheels which will drive it up ramps, hills etc or it will freewheel. The wheels have breaks to fix position then the cutting head turns on a turntable to cut swathes out of the stump as per the picture. The handle adjusts backwards and forwards which helps the deeper you go.