I bought this tool to use with my MM 25000 nail drill for my acrylic nails. This tool is very suitable for gently cleaning the nail bed area of the nail bed, in preparation for filling in my acrylic nails or for attaching a new nail. There is a little bead like a ball on the end of the tool where you put it in the drill bit, I don't know what it's for but it still works great with my drill bit. I will definitely order again if I need a new tool.