Sait 73942 7" x 7/8" 40-Grit Saitlam F Premium Zirconium Flap Discs 10pkType 29- Conical Shape, Fiberglass Backing. Sait 40-Grit Saitlam F Premium Zirconium Flap Discs. Premium zirconium grain. Extremely long life. Closed coat structure for more material removal. Fast, aggressive cutting action for high pressure grinding. An industry standard for flap discs. Stainless steel, high tensile alloys. Ferrous and/or non-ferrous metals. Fiberglass backing for lighter, more silent operation. Fiberglass backing will not splinter or smear on the workpiece. Backing wears with the abrasive cloth. Go from stock removal to finishing with one disc. Specifications: RPM - 8500. Tech Info: Resin over resin construction for a strong bond resistant to heat and moisture.
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