I have had this for 2 or 3 years but never got around to using it. With the weather almost 60 in NY today I figured it was today or April. The kit has a spray lubricant, cream lens clarifyer and 4 grades of abrasive pads. You start with the coarsest going one direction and work up in grades changing direction by 90 degrees followed by the cream clarifyer. It took maybe 6 minutes a lens and that included calling the dogs back from wandering several times. The results were impressive. Not perfect, but very good for a first try. I got enough lubricant and clarifyer for 10 lens but the abrasive pads might dull. You can hear/feel when the pad has done its job and ready to move to the next grade of pad. For $10 and 20 minutes its well worth it. The other 8 minutes was spent reading the directions. Given this went so quick (and all by hand), I am not sure one needs a drill operated kit.