Premium quality through hardened Manganese Nickel Alloy Steel for higher reliability. Dual sided D-shaped links which provide greater traction and extended life. Innovative non-sliding hard sided packaging comes complete with gloves, kneeling mat, mounting instructions and spare parts. Patented external quick release system, allows for one hand removal. Patented self centering and self tensioning system with micro regulation solution. 10mm chain link diameter. The best anti-scratch solution for light alloy rims. Innovative design and unique color-coded assembling points. Chain Fit Guide Guide to State Chain Usage Laws NOTE: Due to the nature of these products, the Racks for All return policy does not apply. Thule's one year warranty does apply.