This 6-Piece Wire Brush Set Features Stainless Steel Construction For Durability. The Set Includes Brushes In Diameters Of 8Mm 10Mm 12Mm 15Mm 17Mm And 19Mm Each With A 4-Inch Long 1/4-Inch Hex Handle. These Brushes Are Designed For Accessing Narrow Holes And Tight Spaces Ideal For Removing Rust And Dirt. They Are Compatible With Most Power Drills And Die Grinders (Not Included) For Efficient Cleaning. The Practical Design Offers Better Control And Grip For Various Cleaning Tasks On Ports Pipes Bearings And Cylinders.