Revolutionary snow chains: set up in 12 seconds and offer excellent driving comfort. TECHNICAL FEATURES: 9 mm overall dimensions; rhombus symmetrical tread pattern; internal rigid arch system for simple and intuitive assembly; automatic pedal-operated tensioning system; quick-acting external release system; system with patented solutions for the protection of rims alloy. Supplied in a practical and resistant bag, with integrated instructions, which can be used as a mat during assembly operations. Approvals / Certifications / Conformity: Ö-Norm 5117, UNI 11313, TÜV. Not suitable for off-road routes.