Pinch-R-ReleaseSpring-action clip opens quickly and easily with finger pressure. 2- to 12-lb. tension range. The deeper the line is set back in the pads, the greater the pressure.WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.