Clay Disc for the Polishin&rsquo; Pal (Disc Only) The Polishin Pal Clay Disc enables you to clay without getting clay residue or lubricant on your hands. One side of the disc has hook & loop material to attach to the Polishin Pal. Aside from being neater than old-fashioned claying, the Clay Disc allows you to use a larger surface of the clay. The Clay Disc is 3.5 in diameter.