Powerbuilt 648403 1-1/8-Inch Length Brake Cylinder Hone 2 Arm 3/4-Inch to 2-1/2-Inch Diameter Made to be the most reliable tools in the market today Tool solutions for most all situations Built to exceed tool standards Fits 3/8-Inch drive power drills Self-aligning and self-centering Flexible shaft with adjustable tension for use on or off the car Includes #220 medium grit stones, 1-1/8-Inch length The right tool makes the job easier