12-10 AWG Heat Shrink Butt Connector - 250-Pieces - JarReusable jar is clear for easy identification of the terminals and has a flip lid for ease of use.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.