3M SandBlaster Pro 220-Grit Sanding Sponge 2.5-in x 4.5-in (2-Pack) in the Sanding Sponges department at Lowes.com
Amazon.com: Dura-Gold Premium 1000 Grit Wet or Dry Sandpaper Sheets, 5-1/2" x 9", Box of 25 - Car Color Sanding, Detailing, Polishing Automotive, Woodworking Wood Furniture, Metal Finishing Hand Sand Block Sander :