About this item HIGH QUALITY PARTICLES: Our 4" angle grinder nylon brush has coarser abrasive particles is designed to be effective and will last many times longer than a wire brush. As the brushes nylon strands wear down, they expose fresh embedded abrasive grit that continues to provide consistent clean and fast scuffing and rust removal. GREATER COMPATIBILITY:Abrasive filament nylon cup brush with standard 5/8- 11 threaded arbor for direct use with 4-1/2 angle grinders. IMPROVE GRINDING EFFICIENCY:Safer to use than wire brushes, synthetic, chemical resistant Nylon Bristles are extremely safe and will not spark, corrode, puncture skin, Maintains shape & will not rust，Will not shed bristles under normal conditions.Easily & smoothly polish severe rust, corosion, paint, scale. MORE SAFER:Nylon Brush quickly scuffs and strips metal surfaces with the abrasive nylon strands without causing any sparks that metal brushes do. It also leaves the surface with a fine enough scuff scratch that a primer or truck bed liner coating can go directly over it. WIDE APPLICATIONS:Safe and easy light rust and paint remover and cleaner on most wet or dry applications like Metal, Steel, Stainless Steel, Wood, Aluminum, Plastic, PVC, Tiles, Stones and more，Ideal for spray-on truck bedliner preparation. WARM TIP：For your safety, before use wire wheel for angle grinder, please make sure wear a pair of safety glasses, safety mask and protective gloves.If you have any questions, please feel free to contact us at any time.