These Porter-Cable sanding sheets are manufactured using a premium film backing.  This superior material provides a consistent and more uniform coating of the abrasive, greater tear resistance while sanding and an unbeatable sanding finish.  Comes in packages of 10 sheets.    $6.99 each package

• 75 700 08 10               80 Grit        Coarse
• 75 700 10 10              120 Grit       Medium/Fine
• 75 700 15 10               150 Grit       Fine
• 75 700 22 10               220 Grit      Very Fine