Oh ok, The cheaper saws ive used had that, The word "inertial" thru me off. im calling to ask, right now. It has the inertial brake. the guy repairs small engines. it was dropped off for repair, cylinder and piston was hashed, so he installed a 026 piston and cylinder onto it. needs chain sharpened he was doing that this afternoon. comes with 3 other chains that are sharp and ready to use. so... worth $150 or not? opinons? I had concerns of the larger bore needing the carb re-jetted, he says there was enough adjustement in the jet screws to get it properly tuned. Ill go look today.