Manufactured in accordance with ANSI safety requirement and ISO 9001 standard. They are versatile abrasive that can be used in the slop for many different finishing task: Deburring, Surface preparation prior to coating, Cleaning weld splatter, Finishing pipes and cylinders. These flap wheels are mounted on a smooth 1/4" shank for use in die grinders, flexible shaft tools and high speed portable drills with collet.