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The ARC ABRASIVES 71-10827FF Predator Flap Disc is a Type 27 abrasive disc engineered for fast, aggressive material removal on metal surfaces. Measuring 4.5 inches in diameter with a 7/8-inch arbor hole, it runs at a maximum speed of 13,300 RPM and carries a Grit 120 abrasive surface for controlled finishing after weld removal or grinding. Sold in a box of 10, this disc is built for high-output shop environments where disc life and cut rate both matter. It is used by fabricators, ironworkers, and welders who need consistent performance across extended runs on ferrous and non-ferrous metals.
This flap disc is well suited for weld removal, blending, and surface preparation on mild steel, high alloy steel, nickel alloy, and stainless steel. The Type 27 flat profile makes it effective for flat surface work and inside-angle grinding when used at low angles. It fits standard 4.5-inch angle grinders with a 7/8-inch arbor and is a practical choice for production welding shops, metal fabrication facilities, and maintenance trades requiring a reliable abrasive consumable at Grit 120 finish levels.
Designed for use with standard 4.5-inch angle grinders fitted with a 7/8-inch arbor. Suitable for grinding and blending operations on mild steel, high alloy steel, nickel alloy, and stainless steel workpieces.
Flap discs are installed and replaced by the operator or tool technician servicing the angle grinder. Always ensure the grinder is powered off and unplugged before mounting or removing a disc. Verify that the grinder's rated RPM meets or exceeds the disc's 13,300 RPM maximum before operation. Inspect the disc for damage before each use and do not use discs that show tearing, delamination, or missing flaps.
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