60 Grit 17" Quicksand Floor Sanding Disc, Box of 20: Amazon.com: Tools & Home Improvement
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Silicon Carbide Floor Sanding Discs 17 inch Dia. x 2 inch Hole (Grit: 80x)
6 Inch 150mm 17 Holes 80 Grits Hook and Loop Polyester Film Blue Sandpaper Sanding Disc - China Sanding Discs, Sanding Paper | Made-in-China.com