Double braid nylon to absorb shock Comes with a 12” up to 18” spliced eye in one end Great abrasion and UV resistance Polyester cover / nylon core Our dock lines are unique because they have a polyester cover with a nylon core. The polyester has greater UV and abrasion resistance and the nylon core gives the rope high strength and elasticity. The ability to stretch protects your boat and hardware from damage. Each dock line comes with a professionally splice and stitched eye at one end.