3M 366L Microfinishing Film Disc with no holes Precision, micron-graded, resin-bonded, polyester film backing Aggressive cut with uniform finish Anti-loading Fre-Cut™ coating provides greater efficiency and longer product life Use on plastic, fiberglass, wood, metal, solid-surface composites Constructed of durable aluminum oxide; works well for most wood species and applications, especially contoured surfaces The flexible film backing and micron-graded mineral provide excellent consistency and minimal edge wear The open coat feature and special loading resistant coating makes this disc a good choice when loading is a problemNote: Grades are given in Microns
