The nordic track commercial 1750 treadmill is a strong commercial machine that has a great motor and is built to last have a choice of cushioning with runners flex adjustable cushioning incorporates six dampeners that provide full frame impact reduction across the entire tread deck you can turn it on for superb absorption or turn it off to feel more like running on the road run quieter than ever with the 2 ply belt which is specifically designed to reduce noise and friction for a quieter wor