RT Series (18 lbs thru 50 lbs tensile strength) cable ties are All-States most widely used ties. They are available in Miniature (18 lbs.), Compact (30 lbs.), Intermediate (40 lbs.) and Standard (50 lbs.) cross-sections in lengths from 3.75" to 14.50" for bundles from .0625" to 4" diameters.