Fast sinking, level tungsten tips that sink like a rock. These fast sinking, level tips have a tungsten compound coating, are supple, do not kink and sink like a rock. Built on RIO&';s ultra-low stretch ConnectCore, they are extremely sensitive to soft grabs and ensure fast, solid hook sets.There are 5 different weights of "T" tip available; T-8, T-11, T-14, T-17 and T-20, and each size is either available in a 30 ft pack with welded loops on both ends (T-20 doesn&';t have any welded loops), or as a bulk, 500 ft spool. Technology Highlights: Front Loop A neat, bullet-proof welded loop on the front end for fast rigging. Back Loop A neat, bullet-proof welded loop on the rear end for fast rigging. Front Loop Easy ID loops are neat, printed loops that show the size and type of the shooting head. ConnectCore When you rely on touch to know what&';s going on in the depths, line stretch is the enemy. ConnectCore lines open up new worlds of perception and sensitivity with ultra-low stretch performance. Soft, subtle takes become positive grabs, and without stretch to dull reaction times, hook sets are instant and sure. ConnectCore. The secret weapon for success.