Walky Dog Replacment Spare Leash All Models of, Military Grade USA Made Paracord 500lbs Strength 100% Nylon Heavy Duty Cord for replacing leash- cord on walky dog and Walky Dog Plus Leash Has Military Grade Paracord 550-lbs pull strength, 7 strand Inner core 5/32 -4mm diameter, uv fade resistant & rot resistant Cord comes pre knotted and sized from factory for easy replacement Paracord Made IN USA Replacing the cord is extremely easy instructions included and link to watch video