I I stalled my 150lb heavy bag in the garage. There is a bedroom above it. When working out the entire bedroom vibrated and so do the kitchen which is not even adjacent to the garage. It was not useable at all. Then I came across the Spider mount. I was not sure about buying it due to the cost. The bracket I had up was $18 why would I pay over $200 for a bracket?? Why, because it really does work. It does exactly what it states it will do. Now when I workout there is a faint noise of gloves hitting the bag but absolutely zero noise and vibration from the mount or bag itself. When I say zero noise I really mean zero noise. I added a second spring grip but knowing how good the product is I didn’t need it. I just installed it because it was already paid for. It is solid construction. Quite heavy to mount on your own but I was able to do the job solo just needs a bit of planning. As you can see my joists were not the right size so I installed a couple of braces. Fits perfectly and sturdier than I thought it would be. It is pricey but when you actually see the product and realize just how well built it is it’s definitely worth the money. My advice if you’re on the fence is but it. Don’t worry about it you will be so pleased that you invested in it, and so will your family!!! I haven’t found any faults at all to write about. Comes with the bolts and washers that you need. Excellent bit of kit and a real game changer for me.