Ultra Touch 4 Inch/100mm Brass Coated Cup Brush

Diameter: 4 inches (100mm).
Wire Type: Brass-coated steel wire (Golden color).
Wire Style: Crimped wire (for flexible and light-to-medium cleaning).
Fitting/Thread: Available in standard M10 x 1.5 or M14 x 2.0 (compatible with most 4-inch and 5-inch angle grinders).
Max RPM: Typically rated for up to 8,500 – 12,500 RPM.