UNIVEX SHEET: For finish polishing of plain wood and prepainted surfaces (for manual grinding use). UNIWOOL: For finish polishing of plain wood and prepainted surfaces. Optimum for concave, convex and curved surfaces. UNISOFT: The type is sandwiching the sponge into UNIWOOL. Flexibility and excellent fitness can keep shape to the end. UNISANDPAD: Made by thicker fibers than UNIVEX. Featuring exceptional cutting performance and durability. Optimum of removing rust and descaling work.