Originally designed to save sidewall wear on radial tires, Radial Chain was the first real brand name in cable chain winter traction products. With a history of performance testing from Alaska to Switzerland and a tire application chart that contains every original equipment tire sold in North America, Radial Chain is an excellent, yet affordable choice in winter traction. Radial Chain's plastic package is durable, waterproof and recyclable. Chain tensioners SHOULD NOT be used.