I use the WINBAG® to help level heaters and pumps that I am installing. Its much easier with this great product! Saves me a lot of time and the job is done fast with these helpers ( WINBAG® ). Its so much easier with their aid. I’ve also used it on leveling skimmers before I set them. Professional wise this is a product I will use in the future always. Also use them privately in and around my house leveling the washing-machine got a new one so easy to level now with the product. My wife used it for a wobbly book case to level it without my help she was able to do it by here self with the WINBAG®.