The Firstlaw Fitness Spider Mount is a great way to hang a heavy punching bag. For the most noise and energy dampening ability, our engineering team suggests only using a punching bag hanger that mounts to at least 2 floor joists. This will help distribute the energy twice as well as attaching to a single joist. The Spider Mount is the only heavy bag hanger that allows the bag to move in every direction, not just up and down. This full 360 degree spherical motion provides superior energy dampening. The Spider Mount is engineered to last. It comes with a LIFETIME WARRANTY and is 100% made in the USA. If you are not 100% satisfied with this product return it for a full refund, no questions asked. Please contact Firstlaw Fitness with any questions through Amazon or direct from our website.