3M Finesse-it PSA Film Disc Roll 460LA is designed with channels to reduce debris loading and extend disc life. This disc uses 3M’s microreplicated technology that helps remove surface imperfections from clearcoats without changing the surface topography.3M Finesse-it PSA Film Disc Roll 460LA is designed with channels to reduce debris loading and extend disc life. The design is also engineered by incorporating silicon carbide mineral into a matrix of repeating microstructures, and the film backing minimizes the chance for surface abnormalities. The micro-structured silicon carbide mineral cuts sharply enough to quickly remove imperfections, but not so much so that you risk gouging or marring the surface. It is commonly used for defect repair on clear coats, paint and plastics, because it can effectively refine these surfaces without significantly gouging or damaging the workpiece. Available in three grades -- A3, A5 and A7, 3M Finesse-it PSA Film Disc Roll 460LA is used for clearcoat spot repair by automotive manufacturers worldwide. It can be used for both manual and automated processes.