1.Cost-Effective 6 Pcs Angle Grinder Wire Wheel: Angle grinder brushes are made of high strength hardened carbon steel wire for better performance than comparable products. Wire brush sets for angle grinders are a better value than buying from your local tool store. 2.Superb Durability: This wire wheel for Angle grinder is made of high quality materials, making it extremely durable. The inner and outer fixing plates are made of thickened steel, which maintains its strength and stability even under high rotational speeds and heavy pressure,capable of long term use without significant wear and tear. 3.Powerful Compatibility: The wire wheel brush can be used directly on 4-1/2' angle grinders and is compatible with commercially available electric angle grinders and grinders with 5/8' threaded arbors. 4.Specifications: Made of 0.02' 72A twisted carbon steel wire, 4 inch, 5/8' threaded arbor, 12,500 max. speed. Set includes 8 pcs angle grinder wire wheels, ideal for heavy duty cleaning of large metal surfaces and edge fusion.