Sait 50149 4-1/2" x 7/8" SAIT-LOK 50-Grit Premium Aluminum Oxide Fiber Discs 15pkSait SAIT-LOK 50-Grit Premium Aluminum Oxide Fiber Disc. Premium aluminum oxide grain. Special aluminum oxide grain to reduce heat build up and reduce loading. Closed coat structure for more material removal and better finishing. Stainless steel, high tensile steel, titanium, aluminum. Ferrous metals. Tech Info: Resin over resin construction for a strong bond that is resistant to heat and moisture. Vulcanized fiber backing for heavy duty sanding. Available with SAIT-LOK quick change hub which extends disc life and requires fewer disc changes. .
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