finally something that works [SEP] i love this product i have embarrassingly dry and cracked heels in the summer i would have to spend time every week filing with a course medium and fine file to get my heels to a place where i was not embarrassed to wear flip flops even then it was not how i really wanted my heels after one of the files i used was discontinued i decided to look for something else i decided that i wanted something with a motor that would really get the job done most of the products i found had mediocre to bad reviews until i found this one i decided to give it a try now that i have it i do not think i will even use a foot file again it is very easy to use and works to file the skin away with ease i love the adjustable speed i keep it about a third of the way up the first time i used it with the course disc i had the speed set higher and my skin became very warm and felt like it was burning to i turned it down to a slower speed the fine disc i can use at a higher speed i can file my feel in a few minutes and they look and feel great i have used it times so far and both of the discs seem like new so i suspect that i will not need to buy refills for a while the only suggestion i have it to start at a slow speed and get used to it before using higher speeds to see what you find comfortable and effective the first couple time