4-1/2 Inch Metal Grinding Disc Wheel: Type 27, 7/8 arbor, 1/4 thickness maximum speeds of 13,300 RPM and 80 m/s. Aluminum oxide, and 3 full sheets of fiberglass Grinding wheels 4 1/2 inch with very good removal rate, suitable for grinding both edges and surfaces for aggressive grinding action and smoother running wheels, reducing replacement frequency Tackles rust removal, edge profiling, and surface prep for automotive or construction tasks. Ideal for use angle grinders when working in hard to reach areas, quickly and efficiently Perfect for grinding, rust removal, deburring, cleaning, and polishing. Ideal for very solid construction steel, stainless, cast iron, sheet metaland sheet steel, feet most 4 1/2 angle grinders SAFE & STABLE OPERATION: Use only for grinding — never for cutting. Always wear ANSI-approved face shield, hearing protection, and grinding gloves. Inspect wheel for damage before each use. Ensure guard is properly installed on your angle grinder and that tool's max RPM does not exceed wheel rating ASIN B0H45DLC2B Model 4.5-Iinch grinding wheels Set Name 5 Pack Grit Type Medium Brand Name Jgrgoris Grit Number 24 Part Number 5 Manufacturer Jgrgoris Tools Item Diameter 4.5 inches Item Highlight Welding Grinding Disc Disk for Metal & Stainless Steel, Reinforced with Three Layers of Fiberglass Mesh Item Thickness 0.25 inches Item Dimensions 4.5 x 4.5 x 0.1 inches Number of Items 5 Compatible Devices Angle Grinder Grit Material Type Aluminum Oxide Additional Features Depressed center Compatible Material Metal Included Components 5 Pack Grinding Wheel Warranty Description 90 days Item Dimensions L x W 4.5 L x 4.5 W Maximum Rotational Speed 13300 rpm Industry Standard Identifier Type 27 Recommended Uses For Product Grinding, Paint Removal, Polishing, Rust Removal, Sharpening