Barrel buffs are used to polish in tight areas. They are designed specifically for polishing in the holes of wheels. The Barrel can also be used underneath the valve stems where you can't quite reach with the buffer. We've seen polishers also use these in between the lugnuts. Just apply a little bit of compound or hand polish. The Barrel buff has the stud to be attached to a drill. Whether spinning at high speed or low speed it works both ways. We personally recommend using the time2shine aluminum hand polish with the buff. It is best used if the wheels are in good shape. Likewise if the wheels are in rougher shape the Luhmi is best used.
