I managed to get my tractor stuck in a bog up to its axles and the engine was resting on the bog. I tried every other option with no success and then came across this jack while searching through Amazon. I thought I would give it a go and placed an order. When it arrived I cut two pieces of 20mm plywood and covered them with carpet and placed them either side of the jack, put it in a void I had dug out below the tractor. Then connected a compressor with a hand control valve and inflated the jack and sure enough the balloon settled and started to lift the tractor. I was then able to put some planks etc. under the wheels one by one and eventually drove the tractor out. What a relief. I strongly recommend this product for all types of problem lifts. As long as the balloon is protected from sharp objects it will do the job.