RTH Series (120 lbs tensile strength) cable ties are available in Heavy (120 lbs.) cross-sections in lengths from 8" to 28.5" for bundles from 2" to 8" diameters. RTV Series (175 lbs tensile strength) cable ties are among the toughest ties offered. RTE Series (250 lbs tensile strength) cable ties are the strongest tensile strength ties offered. Unique in design, RTE Series cable ties have two tracks and two pawls in the head.