First used today. Does the job. To me this does not seem light duty, nor heavy duty, but pretty much status quo as automotive accessories go. Found myself nodding up and down saying yeah that should do it. There is a round washer full of bearings underneath the top clamps. I put a ton of grease and vaseline on the threads to reduce friction, especially since the threads catch on themselves a lot and are kind of rough. There is no hook or attachment included to connect chain to engine so I picked up a 3/8\" Haulmaster quicklink rated at 600 lbs and custom ground/drilled a steel bracket to bolt to an engine attachment point.