The pmd mixed white replacement discs 6 pack contains a selection of large and small discs which will provide the lowest level of exfoliation when attached to your pmd personal microderm international lm directions for use securely place on pmd device use on your face elbows hands feet or wherever you have uneven skin tonetexture works well on surface scars contains 2 x large body discs 4 x small facial discs 1 x black replacement filter aluminium oxide crystal t