Doubled premium 1" nylon webbing

This model is similar to the ET-300 and ET-400 models

Genuine E-Collar Technologies transmitter

stronger fibers at fixed intervals

ET-800/ET-802 Systems

Round Biothane Tracking Line softshell Doubled premium 1" nylon webbingMade from 1 4" Round BioThane Beta 520 Completely waterproof Available in 4 colors Break strength of 500 lbs Not intended for use as a tie out line [split] RedLine K 9 Round Biothane Tracking Lines are made with 520 Round Biothane Beta and do not absorb water or rot. With a break strength of 500 pounds, this material is both lightweight and durable making for an excellent tracking or nose work line. Biothane is the gold standard for all weather lines.