These chains are designed for mud service use. Made from 7-10mm wire. Extra Heavy Duty Cross Chain and Hooks for the Toughest Situations. Fits Tire Sizes: 295/45-24, 275/70-16, 285/70-17, 265/65-18, 275/65-18, 285/50-20, 295/50-20, 275/55-20, 305/40-22, 275/85-16, 275/70-17.5, 285/55-20, 275/70-18, 285/50-22