PARS, having square wear chains, is reinforced with U- spiked studs to enhance the highest traction in snowy and muddy ground. The spiked studs and flash welded rings are used as wear parts to provide additional grip and durability. The light tension system developed for this model, both keeps the tensioning simple and allow optimum fit for all type of tires. Side Chains: 8 – 10 mm Wear Chains: 8 – 10 mm Square Profile Wear & Connection Rings: 9 – 11 mm Welded Spiked-Studs: 8 – 9 mm • Standard design is with tensioning chains.