HATCH PREMIUM 68-LB BACKING - The strongest braided line available by diameter. At a mere .015" diameter its breaking strength is 68-lbs! The tightly braided 8-strands of Polyethylene line, or PE line, is very smooth with a round profile that zips through rod guides with the very least amount of friction. It also has great abrasion resistance, is UV resistant, ties small sized knots, and provides less drag in the water when battling that fish of a lifetime.