A solid compound applied with nylon bristle brushes and cloth or felt accessories. USES Ideal for polishing or brightening most metals and plastics. You can also use polishing compound to remove light surface imperfections. TIPS • For best results, insert the accessory bit all the way into the tool and then back it out slightly before tightening down. This provides plenty of shank for the collet or chuck to hold onto. • When working with felt or cloth bits, keep the tool speed as low as possible. This allows the compound to gently deposit on the bit. • Use with any of the following cleaning and polishing bits: #414, #422, #423 and #429. Or use with bristle brushes #403, #404 and #405.