Features 1、ACCURATE CUTTING: These grinding wheels adopt an ultra thin design, which cuts quickly and without burrs, with precise cutting hole and less material loss. 2、SILICON CARBIDE: These cutting wheels are made of excellent silicon carbide, which is wear resistant and impact resistant, ensuring high smoothness. 3、CUTTING MATERIAL: This cutting wheel can quickly cut glass fiber and metal such as iron, stainless steel, aluminum, etc., making it convenient and practical. 4、SAFE OPERATION: With exquisite craftsmanship, these grinding wheels can stably and smoothly cut materials, reducing workpiece wear and wheel burns. 5、SPECIFICATIONS: Includes 20pcs cutting wheels, the outer diameter is 100mm, the inner diameter is 22mm, with a standard hole diameter for easy installation. Specification Item Type: Grinding Wheel Material: Silicon Carbide Application: Used for cutting fiberglass, steel, iron, plastic, stainless steel, including steel pipes, structural and galvanized steel, metal sheets, structural pipes, black steel, and other ferrous metals Outer Diameter: Approx. 100mm / 3.9in Inner Diameter: Approx. 22mm / 0.9in Package List 20 x Grinding Wheels