Scientific Anglers 30-ft. Custom Cut Tips use tungsten to deliver sinking rates up to 8-per-second, ensuring your nymphs and streamers get deep and stay deep. Dual welded loops allow you to create two complete tips of different sizes. Scientific Anglers Line Identification (SAID) allows you to identify the weight at a glance. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Tips.