These economy 30ft/9m long lines are used in tracking and to train recalls, retrieve or to "come" from a distance or to stay connected to your dog when hiking or playing in unsecured areas. Leashes are made of 1" polypropylene webbing that's easy on the hands, repels water, resistant to mildew and has a breaking strength of 350 pounds/sq. inch. Includes a brass snap hook. Large 7" (18cm) handle.