CK20 is rated at Total Pump Flow 7.66 gpm (29 Lpm), so if a stand alone is say rated at 13 GPS your little more than half of that, and if time for full stroke is say 10 seconds you should be around 25 still better than by hand with a spliting maul, as long as price is right its a good choice, but spitters stand alone gas, have really come down in price, where as tractor implaments seem to either be going up or holding their own. so could be less expensive to buy a stand alone, but when motor dies you could convert it 4-5 years down the road.