The ESCO Stud Kleen, No. 50170, is designed to clean both the hub and stud at the same time with an internal stainless steel stud cleaning system. The Stud Kleen rids the rim, wheel face, studs, and brake drum of any debris or contaminates that would affect the overall tire/wheel process. Its highly dense abrasive cleaning pad is long-lasting and can clean over 800 wheels with one tool, the company says. To use, simply place the Stud Kleen onto a 1/2” impact gun (air or electric) in the shop and begin. One size fits most application for automotive, SUV, and light trucks.