Pull wire easily and save your knuckles with this handy and reusable tool! Slim, but strong steel roller fits in your 4 inch square box for smooth and controlled wire pulling. Features: Reusable Saves labor Reduces knuckle injuries Spring-Loaded tips keep it locked in place Eliminates damage to the wire insulation during wire pulls WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.