End Brushes are designed to have the ends of the fill strands do the bulk of the work, although the sides can also be used to finish vertical surfaces that parallel the shaft. Especially suited for use on portable air and electric tools, CNC and robotic equipment, the end brush is designed for work where space limitations are a factor. End brushes are made in knot wire of steel filaments. Rugged brushing tools designed with the finest wire to offer efficient usage for a wide variety of tough cleaning and maintenance applications. Applications: Spot Cleaning or Facing, Removal of Slag, Rust or Scale, Cleaning Pipe I.D., Deburring or Flash Removal, Cleaning of Dies, Molds and Tooling, Pipeline Cleaning. 3/4" Brush diameter. 2-3/4" Overall length. 0.014" Fill diameter. Steel filament. 1-1/8" Trim length. 20000 RPM. Note: As a safety precaution, shank must be fully inserted into the chuck or collet and tightened securely.