Our 2-Dog Wheel section is made from 16 strand polyethylene rope. The mainline is 3/8″ dia. and 96″ long. The two tuglines are 40″ long and 1/4″ in dia. The two 12″ necklines are 1/4″ dia. All pieces are removable for easy replacement. Can be ordered with or without our high quality 1/2” brass snaps.