Item #: 57858680Brand: WALTER Surface Technologies Model #: 13C020Exact Tooling IR#: 04 Features and Benefits Steel is the most common filament/wire material due to its durability and cutting action. It is suitable for general purpose applications and can be used on iron, steel, aluminum, brass, copper, and wood. Knotted brushes are made up of multiple filaments/wires bundled together to provide the most aggressive brushing action. Product Specifications Brush Diameter (Inch) 1-1/8 Fill Material Steel Filament/Wire Diameter Range (Decimal Inch) 0.0101 - 0.0200 Filament/Wire Diameter (Decimal Inch) 0.0200 Wire Type Knotted Bridled No Pilot NonPiloted Flared NonFlared Maximum RPM 25000 Shank Diameter (Inch) 1/4 Encapsulated No Hollow Center No Shank Included Yes Brush Diameter (Decimal Inch) 1-1/8 Shank Diameter (Decimal Inch) 1/4